Question

What is -a^-2 if a=-5?

Answer 1

-0.04ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

Answer 2

1/-25

Explanation:

First we plug it in

-(-5)^-2

Then since the exponent is negative, we take the equation and put it under one which makes it a positive.

1/-(-5)^2

Then we solve the exponent

1/-(25)

Since it's a negative outside the parenthesis we treat it as multiplying it by -1 in which case we'd get

1/-25