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Simplifying 3cos(2x) + 1 = -1 Remove parenthesis around (2x) 3cos * 2x + 1 = -1 Reorder the terms for easier multiplication: 3 * 2cos * x + 1 = -1 Multiply 3 * 2 6cos * x + 1 = -1 Multiply cos * x 6cosx + 1 = -1 Reorder the terms: 1 + 6cosx = -1 Solving 1 + 6cosx = -1 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 6cosx = -1 + -1 Combine like terms: 1 + -1 = 0 0 + 6cosx = -1 + -1 6cosx = -1 + -1 Combine like terms: -1 + -1 = -2 6cosx = -2 Divide each side by '6osx'. c = -0.3333333333o-1s-1x-1 Simplifying c = -0.3333333333o-1s-1x-1
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