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Simplifying 2(x + -1)(x + 1) = 0 Reorder the terms: 2(-1 + x)(x + 1) = 0 Reorder the terms: 2(-1 + x)(1 + x) = 0 Multiply (-1 + x) * (1 + x) 2(-1(1 + x) + x(1 + x)) = 0 2((1 * -1 + x * -1) + x(1 + x)) = 0 2((-1 + -1x) + x(1 + x)) = 0 2(-1 + -1x + (1 * x + x * x)) = 0 2(-1 + -1x + (1x + x2)) = 0 Combine like terms: -1x + 1x = 0 2(-1 + 0 + x2) = 0 2(-1 + x2) = 0 (-1 * 2 + x2 * 2) = 0 (-2 + 2x2) = 0 Solving -2 + 2x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 2x2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 2x2 = 0 + 2 2x2 = 0 + 2 Combine like terms: 0 + 2 = 2 2x2 = 2 Divide each side by '2'. x2 = 1 Simplifying x2 = 1 Take the square root of each side: x = {-1, 1}
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