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Popular >

simplify (-3a^2)^2

Solution

simplify

(- 3 a^{2})^{2}

Solution

9 a^{4}

Solution steps

(- 3 a^{2})^{2}

Apply exponent rule:

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

if

n

is even

(- 3 a^{2})^{2} = (3 a^{2})^{2}

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

Apply exponent rule:

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

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

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

3^{2} = 9

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

Apply exponent rule:

(a^{b})^{c} = a^{b c},

assuming

a \geq 0

(a^{2})^{2} = a^{2 \cdot 2}

= 9 a^{2 \cdot 2}

Multiply the numbers:

2 \cdot 2 = 4

= 9 a^{4}

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Frequently Asked Questions (FAQ)

What is (-3a^2)^2 ?
The solution to (-3a^2)^2 is 9a^4