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Simplifying (x + 10)(x + -2) = 0 Reorder the terms: (10 + x)(x + -2) = 0 Reorder the terms: (10 + x)(-2 + x) = 0 Multiply (10 + x) * (-2 + x) (10(-2 + x) + x(-2 + x)) = 0 ((-2 * 10 + x * 10) + x(-2 + x)) = 0 ((-20 + 10x) + x(-2 + x)) = 0 (-20 + 10x + (-2 * x + x * x)) = 0 (-20 + 10x + (-2x + x2)) = 0 Combine like terms: 10x + -2x = 8x (-20 + 8x + x2) = 0 Solving -20 + 8x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (-10 + -1x)(2 + -1x) = 0Subproblem 1
Set the factor '(-10 + -1x)' equal to zero and attempt to solve: Simplifying -10 + -1x = 0 Solving -10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1x = 0 + 10 -1x = 0 + 10 Combine like terms: 0 + 10 = 10 -1x = 10 Divide each side by '-1'. x = -10 Simplifying x = -10Subproblem 2
Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2Solution
x = {-10, 2}
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