Answer:
2z^3+4z^2-2z-4
Step-by-step explanation:
Distribute
2z^3+2z^2-4z+2z^2+2z-4
Simplify
1) Add the whole numbers first.
2) Join the denominators.
3) Simplify.
hence, the answer is 3 4/5.
14)9
15)6
16)57
17)29