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Simplifying 2cos(2x) + 1 = 3cos(x) Remove parenthesis around (2x) 2cos * 2x + 1 = 3cos(x) Reorder the terms for easier multiplication: 2 * 2cos * x + 1 = 3cos(x) Multiply 2 * 2 4cos * x + 1 = 3cos(x) Multiply cos * x 4cosx + 1 = 3cos(x) Reorder the terms: 1 + 4cosx = 3cos(x) Multiply cos * x 1 + 4cosx = 3cosx Solving 1 + 4cosx = 3cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-3cosx' to each side of the equation. 1 + 4cosx + -3cosx = 3cosx + -3cosx Combine like terms: 4cosx + -3cosx = 1cosx 1 + 1cosx = 3cosx + -3cosx Combine like terms: 3cosx + -3cosx = 0 1 + 1cosx = 0 Add '-1' to each side of the equation. 1 + -1 + 1cosx = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 1cosx = 0 + -1 1cosx = 0 + -1 Combine like terms: 0 + -1 = -1 1cosx = -1 Divide each side by '1osx'. c = -1o-1s-1x-1 Simplifying c = -1o-1s-1x-1
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