Question

PLEASE HELP!!!
Which expression is equivalent to 4sin^2(x) - 8sin^2(x/2)

Answer 1

4(sin^2(x) -2sin^2(x/2))

Explanation:

Matter of factorising

Answer 2

It is 4(cos(x)-cos^2(x))

Explanation:

I used an app on chegg and found that this is the only answer that is equivalent