2cos^2(2x)-cos(2)=0

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Solution for 2cos^2(2x)-cos(2)=0 equation: 


Simplifying
2cos2(2x) + -1cos(2) = 0

Remove parenthesis around (2x)
2cos2 * 2x + -1cos(2) = 0

Reorder the terms for easier multiplication:
2 * 2cos2 * x + -1cos(2) = 0

Multiply 2 * 2
4cos2 * x + -1cos(2) = 0

Multiply cos2 * x
4cos2x + -1cos(2) = 0

Reorder the terms for easier multiplication:
4cos2x + -1 * 2cos = 0

Multiply -1 * 2
4cos2x + -2cos = 0

Reorder the terms:
-2cos + 4cos2x = 0

Solving
-2cos + 4cos2x = 0

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Factor out the Greatest Common Factor (GCF), '2cos'.
2cos(-1 + 2sx) = 0

Ignore the factor 2.

Subproblem 1
Set the factor 'cos' equal to zero and attempt to solve:

Simplifying
cos = 0

Solving
cos = 0

Move all terms containing c to the left, all other terms to the right.

Simplifying
cos = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

Subproblem 2
Set the factor '(-1 + 2sx)' equal to zero and attempt to solve:

Simplifying
-1 + 2sx = 0

Solving
-1 + 2sx = 0

Move all terms containing c to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + 2sx = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2sx = 0 + 1
2sx = 0 + 1

Combine like terms: 0 + 1 = 1
2sx = 1

Add '-2sx' to each side of the equation.
2sx + -2sx = 1 + -2sx

Combine like terms: 2sx + -2sx = 0
0 = 1 + -2sx

Simplifying
0 = 1 + -2sx

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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