SOLUTION: How do you factor 1-2cos^2x+cos^4x

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Question 169692: How do you factor 1-2cos^2x+cos^4x
Answer by scott8148(5891) About Me  (Show Source):
You can put this solution on YOUR website!
this is a quadratic with cos^2x as the variable __ also, a perfect square

(1-cos^2x)(1-cos^2x)