What is the answer to 18x^{-2}=2 ?

The answer to 18x^{-2}=2 is x=3,x=-3

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18x^{-2}=2

18 x^{- 2} = 2

x = 3, x = - 3

Solution steps

18 x^{- 2} = 2

Refine

\frac{18}{x ^{2}} = 2

Multiply both sides by

x^{2}

18 = 2 x^{2}

Solve

18 = 2 x^{2} : x = 3, x = - 3

x = 3, x = - 3

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 3, x = - 3

- \frac{7}{x} = - \frac{5}{x + 4}

x, \frac{a x + b}{c x + d} = 4

\frac{1 + 1}{2 ( 4 X - 6 )} = - 2

\frac{x ^{2}}{x} = 0

\frac{9}{x} = \frac{x + 6}{x + 2}