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Simplifying 3x2 + 2x + -1 = x2 + -6x + -9 Reorder the terms: -1 + 2x + 3x2 = x2 + -6x + -9 Reorder the terms: -1 + 2x + 3x2 = -9 + -6x + x2 Solving -1 + 2x + 3x2 = -9 + -6x + x2 Solving for variable 'x'. Reorder the terms: -1 + 9 + 2x + 6x + 3x2 + -1x2 = -9 + -6x + x2 + 9 + 6x + -1x2 Combine like terms: -1 + 9 = 8 8 + 2x + 6x + 3x2 + -1x2 = -9 + -6x + x2 + 9 + 6x + -1x2 Combine like terms: 2x + 6x = 8x 8 + 8x + 3x2 + -1x2 = -9 + -6x + x2 + 9 + 6x + -1x2 Combine like terms: 3x2 + -1x2 = 2x2 8 + 8x + 2x2 = -9 + -6x + x2 + 9 + 6x + -1x2 Reorder the terms: 8 + 8x + 2x2 = -9 + 9 + -6x + 6x + x2 + -1x2 Combine like terms: -9 + 9 = 0 8 + 8x + 2x2 = 0 + -6x + 6x + x2 + -1x2 8 + 8x + 2x2 = -6x + 6x + x2 + -1x2 Combine like terms: -6x + 6x = 0 8 + 8x + 2x2 = 0 + x2 + -1x2 8 + 8x + 2x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 8 + 8x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(4 + 4x + x2) = 0 Factor a trinomial. 2((2 + x)(2 + x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2Subproblem 2
Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2Solution
x = {-2, -2}
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