Answer:
(f + 1) • (f2 + 4f + 8)
Step-by-step explanation:
f^3+5f^2+12f+8
First, distribute (f+1) to (f^2+4f+8)
That should get you to f^3+4f^2+8f+f^2+4f+8 (Your order might be different)
SImplify and write in standard form
You should get f^3+5f^2+12f+8
Hope it helps!
