Question

If f ( x ) = 3x^2 + x - 2, then f ( -2 ) =

Answer 1

Given ,


`f(x) = 3x^(2) + x -2`

Now ,


`f(-2) = 3(-2)^(2) +(-2)-2`

=> f(-2) = 8-4 = 4

Answer 2

First we substitute -2 into .x

3(-2)^2 + (-2) - 2

12 - 4 = 8

f(-2) = 8 :D

Explanation: