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Simplifying cos2(2x) + 4cos2(x) = 2 Remove parenthesis around (2x) cos2 * 2x + 4cos2(x) = 2 Reorder the terms for easier multiplication: 2cos2 * x + 4cos2(x) = 2 Multiply cos2 * x 2cos2x + 4cos2(x) = 2 Multiply cos2 * x 2cos2x + 4cos2x = 2 Combine like terms: 2cos2x + 4cos2x = 6cos2x 6cos2x = 2 Solving 6cos2x = 2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '6os2x'. c = 0.3333333333o-1s-2x-1 Simplifying c = 0.3333333333o-1s-2x-1
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