Simplify (-9x)^-2 - MathMaster

${(- 9 x)}^{- 2}$

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{1}{{(- 9 x)}^{2}}$

Simplify the denominator.

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Apply the product rule to $- 9 x$ .

$\frac{1}{{(- 9)}^{2} x^{2}}$

Raise $- 9$ to the power of $2$ .

$\frac{1}{81 x^{2}}$

Simplify (-9x)^-2

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