Question
Factor the expression and use the fundamental identities to simplify.
1-2 cos^2x + cos^4x
1-2 cos^2x + cos^4x
Answers
this is just
(1-cos^2)^2 = (sin^2)^2 = sin^4
(1-cos^2)^2 = (sin^2)^2 = sin^4
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