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Popular >

simplify 9x^2-3x^{-2}

Solution

simplify

9 x^{2} - 3 x^{- 2}

Solution

9 x^{2} - \frac{3}{x ^{2}}

Solution steps

9 x^{2} - 3 x^{- 2}

Apply exponent rule:

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

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

= 9 x^{2} - 3 \cdot \frac{1}{x ^{2}}

Simplify

3 \cdot \frac{1}{x ^{2}} : \frac{3}{x ^{2}}

= 9 x^{2} - \frac{3}{x ^{2}}

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Frequently Asked Questions (FAQ)

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