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Popular >

simplify (-9x)^2

Solution

simplify

(- 9 x)^{2}

Solution

81 x^{2}

Solution steps

(- 9 x)^{2}

Apply exponent rule:

(- a)^{n} = a^{n},

if

n

is even

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

= (9 x)^{2}

Apply exponent rule:

(a \cdot b)^{n} = a^{n} b^{n}

(9 x)^{2} = 9^{2} x^{2}

= 9^{2} x^{2}

9^{2} = 81

= 81 x^{2}

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Frequently Asked Questions (FAQ)

What is (-9x)^2 ?
The solution to (-9x)^2 is 81x^2