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Simplifying 2cos(3x) * cos(x) = -2 Remove parenthesis around (3x) 2cos * 3x * cos(x) = -2 Reorder the terms for easier multiplication: 2 * 3cos * x * cos * x = -2 Multiply 2 * 3 6cos * x * cos * x = -2 Multiply cos * x 6cosx * cos * x = -2 Multiply cosx * cos 6c2o2s2x * x = -2 Multiply c2o2s2x * x 6c2o2s2x2 = -2 Solving 6c2o2s2x2 = -2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '6o2s2x2'. c2 = -0.3333333333o-2s-2x-2 Simplifying c2 = -0.3333333333o-2s-2x-2 Combine like terms: -0.3333333333o-2s-2x-2 + 0.3333333333o-2s-2x-2 = 0.0000000000 c2 + 0.3333333333o-2s-2x-2 = 0.0000000000 The solution to this equation could not be determined.
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