Answer:
-10
Step-by-step explanation:
f(x) =f(-2)
x=-2
=(-2)^2 +(2)(-2) -10
=4+(-4)-10
=0-10
=-10
-18
F(x)=x^2+2x-10
x= -2
-2^2+2(-2)-10
-4-4-10
-8-10
