cos^2(x)-4cos(x)=0

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


Simplifying
cos2(x) + -4cos(x) = 0

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

Multiply cos * x
cos2x + -4cosx = 0

Reorder the terms:
-4cosx + cos2x = 0

Solving
-4cosx + cos2x = 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), 'cosx'.
cosx(-4 + s) = 0

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 '(-4 + s)' equal to zero and attempt to solve: Simplifying -4 + s = 0 Solving -4 + s = 0 Move all terms containing c to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + s = 0 + 4 Combine like terms: -4 + 4 = 0 0 + s = 0 + 4 s = 0 + 4 Combine like terms: 0 + 4 = 4 s = 4 Add '-1s' to each side of the equation. s + -1s = 4 + -1s Combine like terms: s + -1s = 0 0 = 4 + -1s Simplifying 0 = 4 + -1s 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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