6cos^2(2x)+cos(6x)=cos(2x)

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Solution for 6cos^2(2x)+cos(6x)=cos(2x) equation:


Simplifying
6cos2(2x) + cos(6x) = cos(2x)

Remove parenthesis around (2x)
6cos2 * 2x + cos(6x) = cos(2x)

Reorder the terms for easier multiplication:
6 * 2cos2 * x + cos(6x) = cos(2x)

Multiply 6 * 2
12cos2 * x + cos(6x) = cos(2x)

Multiply cos2 * x
12cos2x + cos(6x) = cos(2x)

Remove parenthesis around (6x)
12cos2x + cos * 6x = cos(2x)

Reorder the terms for easier multiplication:
12cos2x + 6cos * x = cos(2x)

Multiply cos * x
12cos2x + 6cosx = cos(2x)

Reorder the terms:
6cosx + 12cos2x = cos(2x)

Remove parenthesis around (2x)
6cosx + 12cos2x = cos * 2x

Reorder the terms for easier multiplication:
6cosx + 12cos2x = 2cos * x

Multiply cos * x
6cosx + 12cos2x = 2cosx

Solving
6cosx + 12cos2x = 2cosx

Solving for variable 'c'.

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

Add '-2cosx' to each side of the equation.
6cosx + -2cosx + 12cos2x = 2cosx + -2cosx

Combine like terms: 6cosx + -2cosx = 4cosx
4cosx + 12cos2x = 2cosx + -2cosx

Combine like terms: 2cosx + -2cosx = 0
4cosx + 12cos2x = 0

Factor out the Greatest Common Factor (GCF), '4cosx'.
4cosx(1 + 3s) = 0

Ignore the factor 4.

Subproblem 1

Set the factor 'cosx' equal to zero and attempt to solve: Simplifying cosx = 0 Solving cosx = 0 Move all terms containing c to the left, all other terms to the right. Simplifying cosx = 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 + 3s)' equal to zero and attempt to solve: Simplifying 1 + 3s = 0 Solving 1 + 3s = 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 + 3s = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 3s = 0 + -1 3s = 0 + -1 Combine like terms: 0 + -1 = -1 3s = -1 Add '-3s' to each side of the equation. 3s + -3s = -1 + -3s Combine like terms: 3s + -3s = 0 0 = -1 + -3s Simplifying 0 = -1 + -3s 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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