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Simplifying cos2(x) + cos(x) = 2cos(x) + 2 Multiply cos2 * x cos2x + cos(x) = 2cos(x) + 2 Multiply cos * x cos2x + cosx = 2cos(x) + 2 Reorder the terms: cosx + cos2x = 2cos(x) + 2 Multiply cos * x cosx + cos2x = 2cosx + 2 Reorder the terms: cosx + cos2x = 2 + 2cosx Solving cosx + cos2x = 2 + 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. cosx + -2cosx + cos2x = 2 + 2cosx + -2cosx Combine like terms: cosx + -2cosx = -1cosx -1cosx + cos2x = 2 + 2cosx + -2cosx Combine like terms: 2cosx + -2cosx = 0 -1cosx + cos2x = 2 + 0 -1cosx + cos2x = 2 Reorder the terms: -2 + -1cosx + cos2x = 2 + -2 Combine like terms: 2 + -2 = 0 -2 + -1cosx + cos2x = 0 The solution to this equation could not be determined.
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