What is the answer to -x^{-2}=-4 ?

The answer to -x^{-2}=-4 is x= 1/2 ,x=-1/2

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

-x^{-2}=-4

- x^{- 2} = - 4

x = \frac{1}{2}, x = - \frac{1}{2}

Decimal Notation

x = 0.5, x = - 0.5

Solution steps

- x^{- 2} = - 4

Refine

- \frac{1}{x ^{2}} = - 4

Multiply both sides by

x^{2}

- 1 = - 4 x^{2}

Solve

- 1 = - 4 x^{2} : x = \frac{1}{2}, x = - \frac{1}{2}

x = \frac{1}{2}, x = - \frac{1}{2}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{1}{2}, x = - \frac{1}{2}

3 = \frac{- 21}{4 s - 5 + 3}

x, f (x - 3) = \frac{3}{x}

\frac{x - 1}{x - 2} = 0

\frac{21}{2 x} - \frac{2}{x + 3} = 1

\frac{3}{x 1.6} = 1