find each product?

Question

(3z4 - 8) 2

Answer 1

Assuming expression is:-
2 ( 3 z ^4 - 8 )
6 z ^ 4 - 16
However it might be:-
(3 z ^ 4 - 8) ²
( 3 z ^4 - 8) (3 z ^4 - 8)
9 z ^8 - 48 z^4 + 64

You choose!!

Answer 2

24z-16