simplify 9x^{-2}

Solution

simplify

9 x^{- 2}

\frac{9}{x ^{2}}

Solution steps

9 x^{- 2}

Apply exponent rule:

a^{- b} = \frac{1}{a ^{b}}

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

= 9 \cdot \frac{1}{x ^{2}}

Apply the fraction rule:

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

= \frac{9 \cdot 1}{x ^{2}}

Multiply the numbers:

9 \cdot 1 = 9

= \frac{9}{x ^{2}}

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