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Simplifying 4 + 2cos(2x) = 6cos(x) Remove parenthesis around (2x) 4 + 2cos * 2x = 6cos(x) Reorder the terms for easier multiplication: 4 + 2 * 2cos * x = 6cos(x) Multiply 2 * 2 4 + 4cos * x = 6cos(x) Multiply cos * x 4 + 4cosx = 6cos(x) Multiply cos * x 4 + 4cosx = 6cosx Solving 4 + 4cosx = 6cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-6cosx' to each side of the equation. 4 + 4cosx + -6cosx = 6cosx + -6cosx Combine like terms: 4cosx + -6cosx = -2cosx 4 + -2cosx = 6cosx + -6cosx Combine like terms: 6cosx + -6cosx = 0 4 + -2cosx = 0 Add '-4' to each side of the equation. 4 + -4 + -2cosx = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -2cosx = 0 + -4 -2cosx = 0 + -4 Combine like terms: 0 + -4 = -4 -2cosx = -4 Divide each side by '-2osx'. c = 2o-1s-1x-1 Simplifying c = 2o-1s-1x-1
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