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Simplifying (x + 5)(x + -2) = x2 Reorder the terms: (5 + x)(x + -2) = x2 Reorder the terms: (5 + x)(-2 + x) = x2 Multiply (5 + x) * (-2 + x) (5(-2 + x) + x(-2 + x)) = x2 ((-2 * 5 + x * 5) + x(-2 + x)) = x2 ((-10 + 5x) + x(-2 + x)) = x2 (-10 + 5x + (-2 * x + x * x)) = x2 (-10 + 5x + (-2x + x2)) = x2 Combine like terms: 5x + -2x = 3x (-10 + 3x + x2) = x2 Add '-1x2' to each side of the equation. -10 + 3x + x2 + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -10 + 3x + 0 = x2 + -1x2 -10 + 3x = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -10 + 3x = 0 Solving -10 + 3x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + 3x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + 3x = 0 + 10 3x = 0 + 10 Combine like terms: 0 + 10 = 10 3x = 10 Divide each side by '3'. x = 3.333333333 Simplifying x = 3.333333333
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