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Popular >

expand (3x)^{-2}

Solution

expand

(3 x)^{- 2}

Solution

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

Solution steps

(3 x)^{- 2}

Apply exponent rule:

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

= \frac{1}{( 3 x ) ^{2}}

(3 x)^{2} = 3^{2} x^{2}

= \frac{1}{3 ^{2} x ^{2}}

3^{2} = 9

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

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Frequently Asked Questions (FAQ)

What is expand (3x)^{-2} ?
The solution to expand (3x)^{-2} is 1/(9x^2)