Answer:
z^3 + 8
Step-by-step explanation:
here's your solution
=> we need to find product of
( z +2 ) (z^2 - 2z + 4)
=> z(z^2 - 2z + 4) + 2 (z^2 - 2z + 4)
=> z^3 - 2z^2 + 4z + 2z^2 - 4z + 8
=> now, we left with z^3 + 8
=> z^3 + 8
hope it helps
