Question

Which expression is equivalent to (3a)–2? startfraction 1 over 9 a squared endfraction startfraction 1 over 3 a squared endfraction startfraction 3 over a squared endfraction startfraction 9 over a squared endfraction

Answer 1

The expression that is equivalent to $(3a)^{-2}$ is $\frac{1}{9a^{2} }$.

Given expression is $(3a)^{-2}$

How to write a⁻ⁿ in simple form?

$a^{-n} =\frac{1}{a^{n} }$

So, the given expression $(3a)^{-2}$can be written as $\frac{1}{(3a)^{2} }$

$\frac{1}{(3a)^{2} }= \frac{1}{3a*3a} =\frac{1}{9a^{2} }$

Therefore, the expression that is equivalent to $(3a)^{-2}$ is $\frac{1}{9a^{2} }$.

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Answer 2

Answer:

A

Step-by-step explanation:

StartFraction 1 Over 9 a squared EndFraction or 1/9a^2 looks something like that :) hopefully it helps