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Simplifying cos * 2x = 5 + -6cos2 * x Reorder the terms for easier multiplication: 2cos * x = 5 + -6cos2 * x Multiply cos * x 2cosx = 5 + -6cos2 * x Multiply cos2 * x 2cosx = 5 + -6cos2x Solving 2cosx = 5 + -6cos2x Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '6cos2x' to each side of the equation. 2cosx + 6cos2x = 5 + -6cos2x + 6cos2x Combine like terms: -6cos2x + 6cos2x = 0 2cosx + 6cos2x = 5 + 0 2cosx + 6cos2x = 5 Reorder the terms: -5 + 2cosx + 6cos2x = 5 + -5 Combine like terms: 5 + -5 = 0 -5 + 2cosx + 6cos2x = 0 The solution to this equation could not be determined.
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