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Simplifying 3x(10x + x + -8) = 21x(x + -8) Reorder the terms: 3x(-8 + 10x + x) = 21x(x + -8) Combine like terms: 10x + x = 11x 3x(-8 + 11x) = 21x(x + -8) (-8 * 3x + 11x * 3x) = 21x(x + -8) (-24x + 33x2) = 21x(x + -8) Reorder the terms: -24x + 33x2 = 21x(-8 + x) -24x + 33x2 = (-8 * 21x + x * 21x) -24x + 33x2 = (-168x + 21x2) Solving -24x + 33x2 = -168x + 21x2 Solving for variable 'x'. Reorder the terms: -24x + 168x + 33x2 + -21x2 = -168x + 21x2 + 168x + -21x2 Combine like terms: -24x + 168x = 144x 144x + 33x2 + -21x2 = -168x + 21x2 + 168x + -21x2 Combine like terms: 33x2 + -21x2 = 12x2 144x + 12x2 = -168x + 21x2 + 168x + -21x2 Reorder the terms: 144x + 12x2 = -168x + 168x + 21x2 + -21x2 Combine like terms: -168x + 168x = 0 144x + 12x2 = 0 + 21x2 + -21x2 144x + 12x2 = 21x2 + -21x2 Combine like terms: 21x2 + -21x2 = 0 144x + 12x2 = 0 Factor out the Greatest Common Factor (GCF), '12x'. 12x(12 + x) = 0 Ignore the factor 12.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(12 + x)' equal to zero and attempt to solve: Simplifying 12 + x = 0 Solving 12 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + x = 0 + -12 x = 0 + -12 Combine like terms: 0 + -12 = -12 x = -12 Simplifying x = -12Solution
x = {0, -12}
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