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Simplifying sin(4x) = -2sin(2x) Remove parenthesis around (4x) ins * 4x = -2sin(2x) Reorder the terms for easier multiplication: 4ins * x = -2sin(2x) Multiply ins * x 4insx = -2sin(2x) Remove parenthesis around (2x) 4insx = -2ins * 2x Reorder the terms for easier multiplication: 4insx = -2 * 2ins * x Multiply -2 * 2 4insx = -4ins * x Multiply ins * x 4insx = -4insx Solving 4insx = -4insx Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '4insx' to each side of the equation. 4insx + 4insx = -4insx + 4insx Combine like terms: 4insx + 4insx = 8insx 8insx = -4insx + 4insx Combine like terms: -4insx + 4insx = 0 8insx = 0 Divide each side by '8'. insx = 0 Simplifying insx = 0 The solution to this equation could not be determined.
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