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Simplifying x2 + 12 = 9x + -2 Reorder the terms: 12 + x2 = 9x + -2 Reorder the terms: 12 + x2 = -2 + 9x Solving 12 + x2 = -2 + 9x Solving for variable 'x'. Reorder the terms: 12 + 2 + -9x + x2 = -2 + 9x + 2 + -9x Combine like terms: 12 + 2 = 14 14 + -9x + x2 = -2 + 9x + 2 + -9x Reorder the terms: 14 + -9x + x2 = -2 + 2 + 9x + -9x Combine like terms: -2 + 2 = 0 14 + -9x + x2 = 0 + 9x + -9x 14 + -9x + x2 = 9x + -9x Combine like terms: 9x + -9x = 0 14 + -9x + x2 = 0 Factor a trinomial. (2 + -1x)(7 + -1x) = 0Subproblem 1
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 = 2Subproblem 2
Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7Solution
x = {2, 7}
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