Question

evaluate this expression

$2^{-2}$

Answer 1

Answer:

0.25

Step-by-step explanation:

we have to use the following formula here-

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

Now, here we get,

$2^{-2}$

So, applying the formula we get

$2^{-2}= \frac{1}{2^{2}}= \frac{1}{4} =0.25$

So, the answer is     0.25

Answer 2

$2^{-2}$ = $\frac{1}{4}$

using the law of exponents

$a^{-m}$ ⇔ $\frac{1}{}a^{m}$

$2^{-2}$ = $\frac{1}{}2^{2}$ = $\frac{1}{4}$