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tan(2sqrt(x)-3)=-1

Solution

tan (2 x - 3) = - 1

Solution

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

Solution steps

tan (2 x - 3) = - 1

General solutions for

tan (2 x - 3) = - 1

tan (x)

periodicity table with

πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} tan (x) 0 \frac{3}{3} 13 \pm \infty - 3 - 1 - \frac{3}{3}

2 x - 3 = \frac{3 π}{4} + πn

2 x - 3 = \frac{3 π}{4} + πn

Solve

2 x - 3 = \frac{3 π}{4} + πn : x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} {n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}}

2 x - 3 = \frac{3 π}{4} + πn

Multiply both sides by

4

2 x \cdot 4 - 3 \cdot 4 = \frac{3 π}{4} \cdot 4 + πn \cdot 4

Simplify

8 x - 12 = 3 π + 4 πn

Move

12

to the right side

8 x - 12 = 3 π + 4 πn

Add

12

to both sides

8 x - 12 + 12 = 3 π + 4 πn + 12

Simplify

8 x = 3 π + 4 πn + 12

8 x = 3 π + 4 πn + 12

Divide both sides by

8

8 x = 3 π + 4 πn + 12

Divide both sides by

8

\frac{8 x}{8} = \frac{3 π}{8} + \frac{4 πn}{8} + \frac{12}{8}

Simplify

\frac{8 x}{8} = \frac{3 π}{8} + \frac{4 πn}{8} + \frac{12}{8}

Simplify

\frac{8 x}{8} : x

\frac{8 x}{8}

Divide the numbers:

\frac{8}{8} = 1

= x

Simplify

\frac{3 π}{8} + \frac{4 πn}{8} + \frac{12}{8} : \frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2}

\frac{3 π}{8} + \frac{4 πn}{8} + \frac{12}{8}

Group like terms

= \frac{3 π}{8} + \frac{12}{8} + \frac{4 πn}{8}

Cancel

\frac{12}{8} : \frac{3}{2}

\frac{12}{8}

Cancel the common factor:

4

= \frac{3}{2}

= \frac{3 π}{8} + \frac{3}{2} + \frac{4 πn}{8}

Cancel

\frac{4 πn}{8} : \frac{πn}{2}

\frac{4 πn}{8}

Cancel the common factor:

4

= \frac{πn}{2}

= \frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2}

x = \frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2}

x = \frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2}

x = \frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2}

Square both sides:

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

x = \frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2}

(x)^{2} = (\frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2})^{2}

Expand

(x)^{2} : x

(x)^{2}

Apply radical rule:

a = a^{\frac{1}{2}}

= (x^{\frac{1}{2}})^{2}

Apply exponent rule:

(a^{b})^{c} = a^{b c}

= x^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Cancel the common factor:

2

= 1

= x

Expand

(\frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2})^{2} : \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

(\frac{3 π}{8} + \frac{3}{2} + \frac{πn}{2})^{2}

Combine the fractions

\frac{3}{2} + \frac{πn}{2} : \frac{3 + πn}{2}

Apply rule

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{3 + πn}{2}

= (\frac{3 π}{8} + \frac{πn + 3}{2})^{2}

Apply Perfect Square Formula:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

a = \frac{3 π}{8}, b = \frac{3 + πn}{2}

= (\frac{3 π}{8})^{2} + 2 \cdot \frac{3 π}{8} \cdot \frac{3 + πn}{2} + (\frac{3 + πn}{2})^{2}

Simplify

(\frac{3 π}{8})^{2} + 2 \cdot \frac{3 π}{8} \cdot \frac{3 + πn}{2} + (\frac{3 + πn}{2})^{2} : \frac{9 π ^{2}}{64} + \frac{9 π + 3 π ^{2} n}{8} + \frac{9 + 6 πn + π ^{2} n ^{2}}{4}

(\frac{3 π}{8})^{2} + 2 \cdot \frac{3 π}{8} \cdot \frac{3 + πn}{2} + (\frac{3 + πn}{2})^{2}

(\frac{3 π}{8})^{2} = \frac{9 π ^{2}}{64}

(\frac{3 π}{8})^{2}

Apply exponent rule:

(\frac{a}{b})^{c} = \frac{a ^{c}}{b ^{c}}

= \frac{( 3 π ) ^{2}}{8 ^{2}}

Apply exponent rule:

(a \cdot b)^{n} = a^{n} b^{n}

(3 π)^{2} = 3^{2} π^{2}

= \frac{3 ^{2} π ^{2}}{8 ^{2}}

Refine

= \frac{9 π ^{2}}{64}

2 \cdot \frac{3 π}{8} \cdot \frac{3 + πn}{2} = \frac{9 π + 3 π ^{2} n}{8}

2 \cdot \frac{3 π}{8} \cdot \frac{3 + πn}{2}

Multiply fractions:

a \cdot \frac{b}{c} \cdot \frac{d}{e} = \frac{a \cdot b \cdot d}{c \cdot e}

= \frac{3 π ( 3 + πn ) \cdot 2}{8 \cdot 2}

Cancel the common factor:

2

= \frac{3 π ( 3 + πn )}{8}

Expand

3 π (3 + πn) : 9 π + 3 π^{2} n

3 π (3 + πn)

Apply the distributive law:

a (b + c) = ab + a c

a = 3 π, b = 3, c = πn

= 3 π 3 + 3 ππn

= 3 \cdot 3 π + 3 ππn

Simplify

3 \cdot 3 π + 3 ππn : 9 π + 3 π^{2} n

3 \cdot 3 π + 3 ππn

3 \cdot 3 π = 9 π

3 \cdot 3 π

Multiply the numbers:

3 \cdot 3 = 9

= 9 π

3 ππn = 3 π^{2} n

3 ππn

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

ππ = π^{1 + 1}

= 3 π^{1 + 1} n

Add the numbers:

1 + 1 = 2

= 3 π^{2} n

= 9 π + 3 π^{2} n

= 9 π + 3 π^{2} n

= \frac{9 π + 3 π ^{2} n}{8}

(\frac{3 + πn}{2})^{2} = \frac{9 + 6 πn + π ^{2} n ^{2}}{4}

(\frac{3 + πn}{2})^{2}

Apply exponent rule:

(\frac{a}{b})^{c} = \frac{a ^{c}}{b ^{c}}

= \frac{( 3 + πn ) ^{2}}{2 ^{2}}

(3 + πn)^{2} = 9 + 6 πn + π^{2} n^{2}

(3 + πn)^{2}

Apply Perfect Square Formula:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

a = 3, b = πn

= 3^{2} + 2 \cdot 3 πn + (πn)^{2}

Simplify

3^{2} + 2 \cdot 3 πn + (πn)^{2} : 9 + 6 πn + π^{2} n^{2}

3^{2} + 2 \cdot 3 πn + (πn)^{2}

3^{2} = 9

= 9 + 2 \cdot 3 πn + (πn)^{2}

Multiply the numbers:

2 \cdot 3 = 6

= 9 + 6 πn + (πn)^{2}

Apply exponent rule:

(a \cdot b)^{n} = a^{n} b^{n}

= 9 + 6 πn + π^{2} n^{2}

= 9 + 6 πn + π^{2} n^{2}

= \frac{9 + 6 πn + π ^{2} n ^{2}}{2 ^{2}}

2^{2} = 4

= \frac{9 + 6 πn + π ^{2} n ^{2}}{4}

= \frac{9 π ^{2}}{64} + \frac{3 π ^{2} n + 9 π}{8} + \frac{π ^{2} n ^{2} + 6 πn + 9}{4}

= \frac{9 π ^{2}}{64} + \frac{9 π + 3 π ^{2} n}{8} + \frac{9 + 6 πn + π ^{2} n ^{2}}{4}

Apply the fraction rule:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{9 π + 3 π ^{2} n}{8} = \frac{9 π}{8} + \frac{3 π ^{2} n}{8}

= \frac{9 π ^{2}}{64} + \frac{9 π}{8} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2} + 6 πn + 9}{4}

Apply the fraction rule:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{9 + 6 πn + π ^{2} n ^{2}}{4} = \frac{9}{4} + \frac{6 πn}{4} + \frac{π ^{2} n ^{2}}{4}

= \frac{9 π ^{2}}{64} + \frac{9 π}{8} + \frac{3 π ^{2} n}{8} + \frac{9}{4} + \frac{6 πn}{4} + \frac{π ^{2} n ^{2}}{4}

Group like terms

= \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{6 πn}{4} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

Cancel

\frac{6 πn}{4} : \frac{3 πn}{2}

\frac{6 πn}{4}

Cancel the common factor:

2

= \frac{3 πn}{2}

= \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

Verify Solutions:

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} {n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}}

Check the solutions by plugging them into

2 x - 3 = \frac{3 π}{4} + πn

Remove the ones that don't agree with the equation.

Plug

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} : 2 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 3 = \frac{3 π}{4} + πn \Rightarrow n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

2 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 3 = \frac{3 π}{4} + πn

Multiply both sides by

4

2 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} \cdot 4 - 3 \cdot 4 = \frac{3 π}{4} \cdot 4 + πn \cdot 4

Simplify

8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 12 = 3 π + 4 πn

Remove square roots

8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 12 = 3 π + 4 πn

Add

12

to both sides

8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 12 + 12 = 3 π + 4 πn + 12

Simplify

8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} = 3 π + 4 πn + 12

Square both sides:

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn = 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 12 = 3 π + 4 πn

(8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})^{2} = (3 π + 4 πn + 12)^{2}

Expand

(8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})^{2} : 16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn

(8 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})^{2}

Apply exponent rule:

(a \cdot b)^{n} = a^{n} b^{n}

= 8^{2} (\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})^{2}

(\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})^{2} : \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

Apply radical rule:

a = a^{\frac{1}{2}}

= ((\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})^{\frac{1}{2}})^{2}

Apply exponent rule:

(a^{b})^{c} = a^{b c}

= (\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Cancel the common factor:

2

= 1

= \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

= 8^{2} (\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})

8^{2} = 64

= 64 (\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})

Expand

64 (\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}) : 16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn

64 (\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4})

Simplify

\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} : \frac{π ^{2} n ^{2} + 9}{4} + \frac{3 π ^{2} n + 9 π}{8} + \frac{3 πn}{2} + \frac{9 π ^{2}}{64}

\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

Combine the fractions

\frac{9}{4} + \frac{π ^{2} n ^{2}}{4} : \frac{9 + π ^{2} n ^{2}}{4}

Apply rule

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{9 + π ^{2} n ^{2}}{4}

= \frac{π ^{2} n ^{2} + 9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8}

Combine the fractions

\frac{9 π}{8} + \frac{3 π ^{2} n}{8} : \frac{9 π + 3 π ^{2} n}{8}

Apply rule

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{9 π + 3 π ^{2} n}{8}

= \frac{π ^{2} n ^{2} + 9}{4} + \frac{3 π ^{2} n + 9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2}

= 64 (\frac{π ^{2} n ^{2} + 9}{4} + \frac{3 π ^{2} n + 9 π}{8} + \frac{3 πn}{2} + \frac{9 π ^{2}}{64})

Distribute parentheses

= 64 \cdot \frac{9 + π ^{2} n ^{2}}{4} + 64 \cdot \frac{9 π + 3 π ^{2} n}{8} + 64 \cdot \frac{9 π ^{2}}{64} + 64 \cdot \frac{3 πn}{2}

Simplify

64 \cdot \frac{9 + π ^{2} n ^{2}}{4} + 64 \cdot \frac{9 π + 3 π ^{2} n}{8} + 64 \cdot \frac{9 π ^{2}}{64} + 64 \cdot \frac{3 πn}{2} : 16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn

64 \cdot \frac{9 + π ^{2} n ^{2}}{4} + 64 \cdot \frac{9 π + 3 π ^{2} n}{8} + 64 \cdot \frac{9 π ^{2}}{64} + 64 \cdot \frac{3 πn}{2}

64 \cdot \frac{9 + π ^{2} n ^{2}}{4} = 16 π^{2} n^{2} + 144

64 \cdot \frac{9 + π ^{2} n ^{2}}{4}

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{( 9 + π ^{2} n ^{2} ) \cdot 64}{4}

Divide the numbers:

\frac{64}{4} = 16

= 16 (π^{2} n^{2} + 9)

Apply the distributive law:

a (b + c) = ab + a c

a = 16, b = π^{2} n^{2}, c = 9

= 16 π^{2} n^{2} + 16 \cdot 9

Multiply the numbers:

16 \cdot 9 = 144

= 16 π^{2} n^{2} + 144

64 \cdot \frac{9 π + 3 π ^{2} n}{8} = 24 π^{2} n + 72 π

64 \cdot \frac{9 π + 3 π ^{2} n}{8}

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{( 9 π + 3 π ^{2} n ) \cdot 64}{8}

Divide the numbers:

\frac{64}{8} = 8

= 8 (3 π^{2} n + 9 π)

Apply the distributive law:

a (b + c) = ab + a c

a = 8, b = 3 π^{2} n, c = 9 π

= 8 \cdot 3 π^{2} n + 8 \cdot 9 π

Simplify

8 \cdot 3 π^{2} n + 8 \cdot 9 π : 24 π^{2} n + 72 π

8 \cdot 3 π^{2} n + 8 \cdot 9 π

Multiply the numbers:

8 \cdot 3 = 24

= 24 π^{2} n + 8 \cdot 9 π

Multiply the numbers:

8 \cdot 9 = 72

= 24 π^{2} n + 72 π

= 24 π^{2} n + 72 π

64 \cdot \frac{9 π ^{2}}{64} = 9 π^{2}

64 \cdot \frac{9 π ^{2}}{64}

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{9 π ^{2} \cdot 64}{64}

Cancel the common factor:

64

= 9 π^{2}

64 \cdot \frac{3 πn}{2} = 96 πn

64 \cdot \frac{3 πn}{2}

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{3 πn \cdot 64}{2}

Multiply the numbers:

3 \cdot 64 = 192

= \frac{192 πn}{2}

Divide the numbers:

\frac{192}{2} = 96

= 96 πn

= 16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn

= 16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn

= 16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn

Expand

(3 π + 4 πn + 12)^{2} : 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

(3 π + 4 πn + 12)^{2}

(3 π + 4 πn + 12)^{2} = (3 π + 4 πn + 12) (3 π + 4 πn + 12)

= (3 π + 4 πn + 12) (3 π + 4 πn + 12)

Expand

(3 π + 4 πn + 12) (3 π + 4 πn + 12) : 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

(3 π + 4 πn + 12) (3 π + 4 πn + 12)

Distribute parentheses

= 3 π 3 π + 3 π 4 πn + 3 π 12 + 4 πn \cdot 3 π + 4 πn \cdot 4 πn + 4 πn \cdot 12 + 12 \cdot 3 π + 12 \cdot 4 πn + 12 \cdot 12

= 3 \cdot 3 ππ + 3 \cdot 4 ππn + 3 \cdot 12 π + 4 \cdot 3 ππn + 4 \cdot 4 ππnn + 4 \cdot 12 πn + 12 \cdot 3 π + 12 \cdot 4 πn + 12 \cdot 12

Simplify

3 \cdot 3 ππ + 3 \cdot 4 ππn + 3 \cdot 12 π + 4 \cdot 3 ππn + 4 \cdot 4 ππnn + 4 \cdot 12 πn + 12 \cdot 3 π + 12 \cdot 4 πn + 12 \cdot 12 : 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

3 \cdot 3 ππ + 3 \cdot 4 ππn + 3 \cdot 12 π + 4 \cdot 3 ππn + 4 \cdot 4 ππnn + 4 \cdot 12 πn + 12 \cdot 3 π + 12 \cdot 4 πn + 12 \cdot 12

Add similar elements:

3 \cdot 12 π + 12 \cdot 3 π = 2 \cdot 12 \cdot 3 π

= 3 \cdot 3 ππ + 3 \cdot 4 ππn + 2 \cdot 12 \cdot 3 π + 4 \cdot 3 ππn + 4 \cdot 4 ππnn + 4 \cdot 12 πn + 12 \cdot 4 πn + 12 \cdot 12

Add similar elements:

4 \cdot 12 πn + 12 \cdot 4 πn = 2 \cdot 12 \cdot 4 πn

= 3 \cdot 3 ππ + 3 \cdot 4 ππn + 2 \cdot 12 \cdot 3 π + 4 \cdot 3 ππn + 4 \cdot 4 ππnn + 2 \cdot 12 \cdot 4 πn + 12 \cdot 12

Add similar elements:

3 \cdot 4 ππn + 4 \cdot 3 ππn = 2 \cdot 4 \cdot 3 ππn

= 3 \cdot 3 ππ + 2 \cdot 4 \cdot 3 ππn + 2 \cdot 12 \cdot 3 π + 4 \cdot 4 ππnn + 2 \cdot 12 \cdot 4 πn + 12 \cdot 12

3 \cdot 3 ππ = 9 π^{2}

3 \cdot 3 ππ

Multiply the numbers:

3 \cdot 3 = 9

= 9 ππ

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

ππ = π^{1 + 1}

= 9 π^{1 + 1}

Add the numbers:

1 + 1 = 2

= 9 π^{2}

2 \cdot 4 \cdot 3 ππn = 24 π^{2} n

2 \cdot 4 \cdot 3 ππn

Multiply the numbers:

2 \cdot 4 \cdot 3 = 24

= 24 ππn

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

ππ = π^{1 + 1}

= 24 π^{1 + 1} n

Add the numbers:

1 + 1 = 2

= 24 π^{2} n

2 \cdot 12 \cdot 3 π = 72 π

2 \cdot 12 \cdot 3 π

Multiply the numbers:

2 \cdot 12 \cdot 3 = 72

= 72 π

4 \cdot 4 ππnn = 16 π^{2} n^{2}

4 \cdot 4 ππnn

Multiply the numbers:

4 \cdot 4 = 16

= 16 ππnn

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

nn = n^{1 + 1}

= 16 ππ n^{1 + 1}

Add the numbers:

1 + 1 = 2

= 16 ππ n^{2}

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

ππ = π^{1 + 1}

= 16 π^{1 + 1} n^{2}

Add the numbers:

1 + 1 = 2

= 16 π^{2} n^{2}

2 \cdot 12 \cdot 4 πn = 96 πn

2 \cdot 12 \cdot 4 πn

Multiply the numbers:

2 \cdot 12 \cdot 4 = 96

= 96 πn

12 \cdot 12 = 144

12 \cdot 12

Multiply the numbers:

12 \cdot 12 = 144

= 144

= 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

= 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

= 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn = 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn = 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn = 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

Solve

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn = 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144 :

True for all

n

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn = 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144

Subtract

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn

from both sides

16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn - (16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn) = 9 π^{2} + 24 π^{2} n + 72 π + 16 π^{2} n^{2} + 96 πn + 144 - (16 π^{2} n^{2} + 144 + 24 π^{2} n + 72 π + 9 π^{2} + 96 πn)

Simplify

0 = 0

Both sides are equal

True for all n

True for all n

Verify Solutions:

n < - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

False

, n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

False

, n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

True

2 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 3 = \frac{3 π}{4} + πn

Combine domain interval with solution interval:

True for all n

Find the function intervals:

n < - \frac{96 π + 24 π ^{2}}{32 π ^{2}}, n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}, n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

2 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 3 = \frac{3 π}{4} + πn

Find the even roots arguments zeroes:

Solve

\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} = 0 : n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

\frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} = 0

Find Least Common Multiplier of

4, 8, 64, 2 : 64

4, 8, 64, 2

Least Common Multiplier (LCM)

Prime factorization of

4 : 2 \cdot 2

4

4

divides by

24 = 2 \cdot 2

= 2 \cdot 2

Prime factorization of

8 : 2 \cdot 2 \cdot 2

8

8

divides by

28 = 4 \cdot 2

= 2 \cdot 4

4

divides by

24 = 2 \cdot 2

= 2 \cdot 2 \cdot 2

Prime factorization of

64 : 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2

64

64

divides by

264 = 32 \cdot 2

= 2 \cdot 32

32

divides by

232 = 16 \cdot 2

= 2 \cdot 2 \cdot 16

16

divides by

216 = 8 \cdot 2

= 2 \cdot 2 \cdot 2 \cdot 8

8

divides by

28 = 4 \cdot 2

= 2 \cdot 2 \cdot 2 \cdot 2 \cdot 4

4

divides by

24 = 2 \cdot 2

= 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2

Prime factorization of

2 : 2

2

2

is a prime number, therefore no factorization is possible

= 2

Compute a number comprised of factors that appear in at least one of the following:

4, 8, 64, 2

= 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2

Multiply the numbers:

2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 = 64

= 64

Multiply by LCM=

64

\frac{9}{4} \cdot 64 + \frac{9 π}{8} \cdot 64 + \frac{9 π ^{2}}{64} \cdot 64 + \frac{3 πn}{2} \cdot 64 + \frac{3 π ^{2} n}{8} \cdot 64 + \frac{π ^{2} n ^{2}}{4} \cdot 64 = 0 \cdot 64

Simplify

16 π^{2} n^{2} + (96 π + 24 π^{2}) n + 144 + 72 π + 9 π^{2} = 0

Solve with the quadratic formula

16 π^{2} n^{2} + (96 π + 24 π^{2}) n + 144 + 72 π + 9 π^{2} = 0

Quadratic Equation Formula:

For

a = 16 π^{2}, b = 96 π + 24 π^{2}, c = 144 + 72 π + 9 π^{2}

n_{1, 2} = \frac{- ( 96 π + 24 π ^{2} ) \pm ( 96 π + 24 π ^{2} ) ^{2} - 4 \cdot 16 π ^{2} ( 144 + 72 π + 9 π ^{2} )}{2 \cdot 16 π ^{2}}

n_{1, 2} = \frac{- ( 96 π + 24 π ^{2} ) \pm ( 96 π + 24 π ^{2} ) ^{2} - 4 \cdot 16 π ^{2} ( 144 + 72 π + 9 π ^{2} )}{2 \cdot 16 π ^{2}}

(96 π + 24 π^{2})^{2} - 4 \cdot 16 π^{2} (144 + 72 π + 9 π^{2}) = 0

(96 π + 24 π^{2})^{2} - 4 \cdot 16 π^{2} (144 + 72 π + 9 π^{2})

Multiply the numbers:

4 \cdot 16 = 64

= (24 π^{2} + 96 π)^{2} - 64 π^{2} (9 π^{2} + 72 π + 144)

(96 π + 24 π^{2})^{2} : 9216 π^{2} + 4608 π^{3} + 576 π^{4}

Apply Perfect Square Formula:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

a = 96 π, b = 24 π^{2}

= (96 π)^{2} + 2 \cdot 96 π 24 π^{2} + (24 π^{2})^{2}

Simplify

(96 π)^{2} + 2 \cdot 96 π 24 π^{2} + (24 π^{2})^{2} : 9216 π^{2} + 4608 π^{3} + 576 π^{4}

(96 π)^{2} + 2 \cdot 96 π 24 π^{2} + (24 π^{2})^{2}

(96 π)^{2} = 9216 π^{2}

(96 π)^{2}

Apply exponent rule:

(a \cdot b)^{n} = a^{n} b^{n}

= 9 6^{2} π^{2}

9 6^{2} = 9216

= 9216 π^{2}

2 \cdot 96 π 24 π^{2} = 4608 π^{3}

2 \cdot 96 π 24 π^{2}

Multiply the numbers:

2 \cdot 96 \cdot 24 = 4608

= 4608 π^{2} π

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

π π^{2} = π^{1 + 2}

= 4608 π^{1 + 2}

Add the numbers:

1 + 2 = 3

= 4608 π^{3}

(24 π^{2})^{2} = 576 π^{4}

(24 π^{2})^{2}

Apply exponent rule:

(a \cdot b)^{n} = a^{n} b^{n}

= 2 4^{2} (π^{2})^{2}

(π^{2})^{2} : π^{4}

Apply exponent rule:

(a^{b})^{c} = a^{b c}

= π^{2 \cdot 2}

Multiply the numbers:

2 \cdot 2 = 4

= π^{4}

= 2 4^{2} π^{4}

2 4^{2} = 576

= 576 π^{4}

= 9216 π^{2} + 4608 π^{3} + 576 π^{4}

= 9216 π^{2} + 4608 π^{3} + 576 π^{4}

= 9216 π^{2} + 4608 π^{3} + 576 π^{4} - 64 π^{2} (144 + 72 π + 9 π^{2})

Expand

- 64 π^{2} (144 + 72 π + 9 π^{2}) : - 9216 π^{2} - 4608 π^{3} - 576 π^{4}

- 64 π^{2} (144 + 72 π + 9 π^{2})

Distribute parentheses

= (- 64 π^{2}) \cdot 144 + (- 64 π^{2}) \cdot 72 π + (- 64 π^{2}) \cdot 9 π^{2}

Apply minus-plus rules

+ (- a) = - a

= - 64 \cdot 144 π^{2} - 64 \cdot 72 π^{2} π - 64 \cdot 9 π^{2} π^{2}

Simplify

- 64 \cdot 144 π^{2} - 64 \cdot 72 π^{2} π - 64 \cdot 9 π^{2} π^{2} : - 9216 π^{2} - 4608 π^{3} - 576 π^{4}

- 64 \cdot 144 π^{2} - 64 \cdot 72 π^{2} π - 64 \cdot 9 π^{2} π^{2}

64 \cdot 144 π^{2} = 9216 π^{2}

64 \cdot 144 π^{2}

Multiply the numbers:

64 \cdot 144 = 9216

= 9216 π^{2}

64 \cdot 72 π^{2} π = 4608 π^{3}

64 \cdot 72 π^{2} π

Multiply the numbers:

64 \cdot 72 = 4608

= 4608 π^{2} π

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

π^{2} π = π^{2 + 1}

= 4608 π^{2 + 1}

Add the numbers:

2 + 1 = 3

= 4608 π^{3}

64 \cdot 9 π^{2} π^{2} = 576 π^{4}

64 \cdot 9 π^{2} π^{2}

Multiply the numbers:

64 \cdot 9 = 576

= 576 π^{2} π^{2}

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

π^{2} π^{2} = π^{2 + 2}

= 576 π^{2 + 2}

Add the numbers:

2 + 2 = 4

= 576 π^{4}

= - 9216 π^{2} - 4608 π^{3} - 576 π^{4}

= - 9216 π^{2} - 4608 π^{3} - 576 π^{4}

= 9216 π^{2} + 4608 π^{3} + 576 π^{4} - 9216 π^{2} - 4608 π^{3} - 576 π^{4}

Simplify

9216 π^{2} + 4608 π^{3} + 576 π^{4} - 9216 π^{2} - 4608 π^{3} - 576 π^{4} : 0

9216 π^{2} + 4608 π^{3} + 576 π^{4} - 9216 π^{2} - 4608 π^{3} - 576 π^{4}

Group like terms

= 576 π^{4} - 576 π^{4} + 4608 π^{3} - 4608 π^{3} + 9216 π^{2} - 9216 π^{2}

Add similar elements:

9216 π^{2} - 9216 π^{2} = 0

= 576 π^{4} - 576 π^{4} + 4608 π^{3} - 4608 π^{3}

Add similar elements:

4608 π^{3} - 4608 π^{3} = 0

= 576 π^{4} - 576 π^{4}

Add similar elements:

576 π^{4} - 576 π^{4} = 0

= 0

= 0

n_{1, 2} = \frac{- ( 96 π + 24 π ^{2} ) \pm 0}{2 \cdot 16 π ^{2}}

n = \frac{- ( 96 π + 24 π ^{2} )}{2 \cdot 16 π ^{2}}

\frac{- ( 96 π + 24 π ^{2} )}{2 \cdot 16 π ^{2}} = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

\frac{- ( 96 π + 24 π ^{2} )}{2 \cdot 16 π ^{2}}

Multiply the numbers:

2 \cdot 16 = 32

= \frac{- ( 24 π ^{2} + 96 π )}{32 π ^{2}}

Apply the fraction rule:

\frac{- a}{b} = - \frac{a}{b}

= - \frac{( 96 π + 24 π ^{2} )}{32 π ^{2}}

Remove parentheses:

(a) = a

= - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

The solution to the quadratic equation is:

n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

The intervals are defined around the zeroes:

n < - \frac{96 π + 24 π ^{2}}{32 π ^{2}}, n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}, n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

Combine intervals with domain

n < - \frac{96 π + 24 π ^{2}}{32 π ^{2}}, n = - \frac{96 π + 24 π ^{2}}{32 π ^{2}}, n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

Check the solutions by plugging them into

2 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 3 = \frac{3 π}{4} + πn

Remove the ones that don't agree with the equation.

Plug

n < - \frac{96 π + 24 π ^{2}}{32 π ^{2}} : 2 \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} - 3 \neq = \frac{3 π}{4} + πn \Rightarrow

False

The solution is

n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}

The solution is

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4} {n > - \frac{96 π + 24 π ^{2}}{32 π ^{2}}}

x = \frac{9}{4} + \frac{9 π}{8} + \frac{9 π ^{2}}{64} + \frac{3 πn}{2} + \frac{3 π ^{2} n}{8} + \frac{π ^{2} n ^{2}}{4}

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