Question

(1-cos^2x)(1+cos^2x)=2sin^2x-sin^4x

Answer 1

1-(cos^2x)=sin^2x
1+cost^2x=1+(1-sin^2x)
(2-sin^2x)(sin^2x)=(2sin^2x)-(sin^4x)
2sin^x-sin^4x=2sin^2x-sin^4x

Answer 2

I'm guessing the point of that was to prove the equation?

Answer 3

Yes and I'm very confused!

Answer 4

Ok let me explain

Answer 5

sin^2x+cos^2x=1
Did you learn this equation?

Answer 6

Yes I figured it out with your response, I started out writing the problem that way and I felt like I was doing something wrong.