Question

Find f (-8) when...
f(x) = x2 - 3
f(-8) =

Answer 1

The answer is 61.

Explanation:

You have to substitute x = -8 into the function :

`f(x) = {x}^(2) - 3`

`let \: x = - 8`

`f( - 8) = {( - 8)}^(2) - 3`

`f( - 8) = 64 - 3`

`f( - 8) = 61`