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Simplifying cos2(6x) + -8cos(3x) + 5 = 0 Remove parenthesis around (6x) cos2 * 6x + -8cos(3x) + 5 = 0 Reorder the terms for easier multiplication: 6cos2 * x + -8cos(3x) + 5 = 0 Multiply cos2 * x 6cos2x + -8cos(3x) + 5 = 0 Remove parenthesis around (3x) 6cos2x + -8cos * 3x + 5 = 0 Reorder the terms for easier multiplication: 6cos2x + -8 * 3cos * x + 5 = 0 Multiply -8 * 3 6cos2x + -24cos * x + 5 = 0 Multiply cos * x 6cos2x + -24cosx + 5 = 0 Reorder the terms: 5 + -24cosx + 6cos2x = 0 Solving 5 + -24cosx + 6cos2x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -24cosx + -5 + 6cos2x = 0 + -5 Reorder the terms: 5 + -5 + -24cosx + 6cos2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -24cosx + 6cos2x = 0 + -5 -24cosx + 6cos2x = 0 + -5 Combine like terms: 0 + -5 = -5 -24cosx + 6cos2x = -5 Reorder the terms: 5 + -24cosx + 6cos2x = -5 + 5 Combine like terms: -5 + 5 = 0 5 + -24cosx + 6cos2x = 0 The solution to this equation could not be determined.
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