Answer:
f(-4) = - 16
Step-by-step explanation:
f(-4) = (-4)2 + 8(-4)
f(-4) = 16 + -32
f(−4) = -16
f(x)=x^2+8x
f(−4)= [tex]-4^{2}[/tex] + 8 (-4)
= 16 -32
= -16
