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Simplifying x(x + 3) + -8(x + 3) = 0 Reorder the terms: x(3 + x) + -8(x + 3) = 0 (3 * x + x * x) + -8(x + 3) = 0 (3x + x2) + -8(x + 3) = 0 Reorder the terms: 3x + x2 + -8(3 + x) = 0 3x + x2 + (3 * -8 + x * -8) = 0 3x + x2 + (-24 + -8x) = 0 Reorder the terms: -24 + 3x + -8x + x2 = 0 Combine like terms: 3x + -8x = -5x -24 + -5x + x2 = 0 Solving -24 + -5x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (-3 + -1x)(8 + -1x) = 0Subproblem 1
Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3Subproblem 2
Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8Solution
x = {-3, 8}
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