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Simplifying (x + 2)(x + -5) = 6 + -3x Reorder the terms: (2 + x)(x + -5) = 6 + -3x Reorder the terms: (2 + x)(-5 + x) = 6 + -3x Multiply (2 + x) * (-5 + x) (2(-5 + x) + x(-5 + x)) = 6 + -3x ((-5 * 2 + x * 2) + x(-5 + x)) = 6 + -3x ((-10 + 2x) + x(-5 + x)) = 6 + -3x (-10 + 2x + (-5 * x + x * x)) = 6 + -3x (-10 + 2x + (-5x + x2)) = 6 + -3x Combine like terms: 2x + -5x = -3x (-10 + -3x + x2) = 6 + -3x Add '3x' to each side of the equation. -10 + -3x + 3x + x2 = 6 + -3x + 3x Combine like terms: -3x + 3x = 0 -10 + 0 + x2 = 6 + -3x + 3x -10 + x2 = 6 + -3x + 3x Combine like terms: -3x + 3x = 0 -10 + x2 = 6 + 0 -10 + x2 = 6 Solving -10 + x2 = 6 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 + x2 = 6 + 10 Combine like terms: -10 + 10 = 0 0 + x2 = 6 + 10 x2 = 6 + 10 Combine like terms: 6 + 10 = 16 x2 = 16 Simplifying x2 = 16 Take the square root of each side: x = {-4, 4}
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