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Simplifying cos(2x) + 6cos2(x) = 1 Remove parenthesis around (2x) cos * 2x + 6cos2(x) = 1 Reorder the terms for easier multiplication: 2cos * x + 6cos2(x) = 1 Multiply cos * x 2cosx + 6cos2(x) = 1 Multiply cos2 * x 2cosx + 6cos2x = 1 Solving 2cosx + 6cos2x = 1 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Reorder the terms: -1 + 2cosx + 6cos2x = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + 2cosx + 6cos2x = 0 The solution to this equation could not be determined.
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