What is the answer to 3x^{-2}=27 ?

The answer to 3x^{-2}=27 is x= 1/3 ,x=-1/3

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3x^{-2}=27

3 x^{- 2} = 27

x = \frac{1}{3}, x = - \frac{1}{3}

Solution steps

3 x^{- 2} = 27

Refine

\frac{3}{x ^{2}} = 27

Multiply both sides by

x^{2}

3 = 27 x^{2}

Solve

3 = 27 x^{2} : x = \frac{1}{3}, x = - \frac{1}{3}

x = \frac{1}{3}, x = - \frac{1}{3}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{1}{3}, x = - \frac{1}{3}

12 x - 7 = \frac{12}{x}

\frac{z - 1}{z + 1} = \frac{2}{z + 4}

\frac{33 - x}{5 x} = 2

\frac{3}{x} - \frac{1}{3} = 6

\frac{6}{x} + \frac{8}{x + 5} = 3