4cos^2x-4cos^2x-1=0

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Solution for 4cos^2x-4cos^2x-1=0 equation: 


Simplifying
4cos2x + -4cos2x + -1 = 0

Reorder the terms:
-1 + 4cos2x + -4cos2x = 0

Combine like terms: 4cos2x + -4cos2x = 0
-1 + 0 = 0
-1 = 0

Solving
-1 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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