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Simplifying 2sin(2x) + -4 = 0 Remove parenthesis around (2x) 2ins * 2x + -4 = 0 Reorder the terms for easier multiplication: 2 * 2ins * x + -4 = 0 Multiply 2 * 2 4ins * x + -4 = 0 Multiply ins * x 4insx + -4 = 0 Reorder the terms: -4 + 4insx = 0 Solving -4 + 4insx = 0 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 4insx = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 4insx = 0 + 4 4insx = 0 + 4 Combine like terms: 0 + 4 = 4 4insx = 4 Divide each side by '4nsx'. i = n-1s-1x-1 Simplifying i = n-1s-1x-1
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