Use the power reducing formulas to rewrite: cos⁴(x)

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) cos⁴(x) = __ - __ cos __ x + __ cos __ x
2) cos⁴(x) = __ + __ cos __ x + __ cos __ x
3) cos⁴(x) = __ - __ cos __ x
4) cos⁴(x) = __ + __ cos __ x

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



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