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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 = 10cosx 4 + 10cosx = -6cosx + 6cosx Combine like terms: -6cosx + 6cosx = 0 4 + 10cosx = 0 Add '-4' to each side of the equation. 4 + -4 + 10cosx = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 10cosx = 0 + -4 10cosx = 0 + -4 Combine like terms: 0 + -4 = -4 10cosx = -4 Divide each side by '10osx'. c = -0.4o-1s-1x-1 Simplifying c = -0.4o-1s-1x-1
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