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Simplifying (x + -9)(x + -1) = 0 Reorder the terms: (-9 + x)(x + -1) = 0 Reorder the terms: (-9 + x)(-1 + x) = 0 Multiply (-9 + x) * (-1 + x) (-9(-1 + x) + x(-1 + x)) = 0 ((-1 * -9 + x * -9) + x(-1 + x)) = 0 ((9 + -9x) + x(-1 + x)) = 0 (9 + -9x + (-1 * x + x * x)) = 0 (9 + -9x + (-1x + x2)) = 0 Combine like terms: -9x + -1x = -10x (9 + -10x + x2) = 0 Solving 9 + -10x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (1 + -1x)(9 + -1x) = 0Subproblem 1
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Subproblem 2
Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9Solution
x = {1, 9}
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