Question

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

Answer 1

f(- 2) = 8

Explanation:

To evaluate f(- 2) , substitute x = - 2 into f(x) , that is

f(- 2) = 3(- 2)² + (- 2) - 2 = 3(4) - 2 - 2 = 12 - 4 = 8