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Simplifying 3x(x + 3) = (2x + -8)(x + 3) Reorder the terms: 3x(3 + x) = (2x + -8)(x + 3) (3 * 3x + x * 3x) = (2x + -8)(x + 3) (9x + 3x2) = (2x + -8)(x + 3) Reorder the terms: 9x + 3x2 = (-8 + 2x)(x + 3) Reorder the terms: 9x + 3x2 = (-8 + 2x)(3 + x) Multiply (-8 + 2x) * (3 + x) 9x + 3x2 = (-8(3 + x) + 2x * (3 + x)) 9x + 3x2 = ((3 * -8 + x * -8) + 2x * (3 + x)) 9x + 3x2 = ((-24 + -8x) + 2x * (3 + x)) 9x + 3x2 = (-24 + -8x + (3 * 2x + x * 2x)) 9x + 3x2 = (-24 + -8x + (6x + 2x2)) Combine like terms: -8x + 6x = -2x 9x + 3x2 = (-24 + -2x + 2x2) Solving 9x + 3x2 = -24 + -2x + 2x2 Solving for variable 'x'. Reorder the terms: 24 + 9x + 2x + 3x2 + -2x2 = -24 + -2x + 2x2 + 24 + 2x + -2x2 Combine like terms: 9x + 2x = 11x 24 + 11x + 3x2 + -2x2 = -24 + -2x + 2x2 + 24 + 2x + -2x2 Combine like terms: 3x2 + -2x2 = 1x2 24 + 11x + 1x2 = -24 + -2x + 2x2 + 24 + 2x + -2x2 Reorder the terms: 24 + 11x + 1x2 = -24 + 24 + -2x + 2x + 2x2 + -2x2 Combine like terms: -24 + 24 = 0 24 + 11x + 1x2 = 0 + -2x + 2x + 2x2 + -2x2 24 + 11x + 1x2 = -2x + 2x + 2x2 + -2x2 Combine like terms: -2x + 2x = 0 24 + 11x + 1x2 = 0 + 2x2 + -2x2 24 + 11x + 1x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 24 + 11x + 1x2 = 0 Factor a trinomial. (8 + x)(3 + x) = 0Subproblem 1
Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 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 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8Subproblem 2
Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3Solution
x = {-8, -3}
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