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Simplifying 2x(x + -4) = 4(1 + -2x) Reorder the terms: 2x(-4 + x) = 4(1 + -2x) (-4 * 2x + x * 2x) = 4(1 + -2x) (-8x + 2x2) = 4(1 + -2x) -8x + 2x2 = (1 * 4 + -2x * 4) -8x + 2x2 = (4 + -8x) Add '8x' to each side of the equation. -8x + 8x + 2x2 = 4 + -8x + 8x Combine like terms: -8x + 8x = 0 0 + 2x2 = 4 + -8x + 8x 2x2 = 4 + -8x + 8x Combine like terms: -8x + 8x = 0 2x2 = 4 + 0 2x2 = 4 Solving 2x2 = 4 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '2'. x2 = 2 Simplifying x2 = 2 Take the square root of each side: x = {-1.414213562, 1.414213562}
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