Question

If f(x)=2x²+x-2, then f(-2)

Answer 1

f(-2)=4

Explanation:

put -2 where x is

f(x)=2x²+x-2

f(-2)=2(-2)²+(-2)-2

f(-2)=(2*4)-4

f(-2)=8-4

f(-2)=4