Question

Evaluate this expression


`2^(-2)`

Answer 1

`2^(-2)` =
`(1)/(4)`

using the law of exponents

`a^(-m)` ⇔
`\frac{1}{}a^(m)`

`2^(-2)` =
`\frac{1}{}2^(2)` =
`(1)/(4)`

Answer 2

0.25

Explanation:

we have to use the following formula here-

`a^(-m)= (1)/(a^(m))`

Now, here we get,

`2^(-2)`

So, applying the formula we get

`2^(-2)= (1)/(2^(2))= (1)/(4) =0.25`

So, the answer is 0.25