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Simplifying 2x2 + x + 3 = 3x + 7 Reorder the terms: 3 + x + 2x2 = 3x + 7 Reorder the terms: 3 + x + 2x2 = 7 + 3x Solving 3 + x + 2x2 = 7 + 3x Solving for variable 'x'. Reorder the terms: 3 + -7 + x + -3x + 2x2 = 7 + 3x + -7 + -3x Combine like terms: 3 + -7 = -4 -4 + x + -3x + 2x2 = 7 + 3x + -7 + -3x Combine like terms: x + -3x = -2x -4 + -2x + 2x2 = 7 + 3x + -7 + -3x Reorder the terms: -4 + -2x + 2x2 = 7 + -7 + 3x + -3x Combine like terms: 7 + -7 = 0 -4 + -2x + 2x2 = 0 + 3x + -3x -4 + -2x + 2x2 = 3x + -3x Combine like terms: 3x + -3x = 0 -4 + -2x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-2 + -1x + x2) = 0 Factor a trinomial. 2((-1 + -1x)(2 + -1x)) = 0 Ignore the factor 2.Subproblem 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 '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2Solution
x = {-1, 2}
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