SOLUTION: Simplify 4cos^2x - 3sin^2x in terms of cosx.

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Question 1202274: Simplify 4cos^2x - 3sin^2x in terms of cosx.
Answer by ikleyn(52794) About Me  (Show Source):
You can put this solution on YOUR website!
.

Replace  sin^2(x)  by  (1-cos^2(x)).  You will get


    4cos^2(x) - 3sin^2(x) = 4cos^2(x) - 3(1-cos^2(x)) = 7cos^2(x) - 3.    ANSWER

Solved, completed and explained.

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To avoid a non-mathematical accent, use a proper  Math language:

        " express  4cos^2(x) - 3sin^2(x)  in terms of  cos(x) ".