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Simplifying sin(8x) + sin(2x) = 2sin(5x) Remove parenthesis around (8x) ins * 8x + sin(2x) = 2sin(5x) Reorder the terms for easier multiplication: 8ins * x + sin(2x) = 2sin(5x) Multiply ins * x 8insx + sin(2x) = 2sin(5x) Remove parenthesis around (2x) 8insx + ins * 2x = 2sin(5x) Reorder the terms for easier multiplication: 8insx + 2ins * x = 2sin(5x) Multiply ins * x 8insx + 2insx = 2sin(5x) Combine like terms: 8insx + 2insx = 10insx 10insx = 2sin(5x) Remove parenthesis around (5x) 10insx = 2ins * 5x Reorder the terms for easier multiplication: 10insx = 2 * 5ins * x Multiply 2 * 5 10insx = 10ins * x Multiply ins * x 10insx = 10insx Add '-10insx' to each side of the equation. 10insx + -10insx = 10insx + -10insx Combine like terms: 10insx + -10insx = 0 0 = 10insx + -10insx Combine like terms: 10insx + -10insx = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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