Use the power reducing formulas to rewrite: sin²(4x)
In terms of the first power of cosine. Simplify your answer as much as possible.

To indicate your answer, first choose one of the four forms below:
1) sin²(4x) = __ - __ cos __ x + __ cos __ x
2) sin²(4x) = __ + __ cos __ x + __ cos __ x
3) sin²(4x) = __ - __ cos __ x
4) sin²(4x) = __ + __ cos __ x

Then fill in the blanks (__) with the appropriate numbers.