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Simplifying X2 + -11X + 30 = 12 Reorder the terms: 30 + -11X + X2 = 12 Solving 30 + -11X + X2 = 12 Solving for variable 'X'. Reorder the terms: 30 + -12 + -11X + X2 = 12 + -12 Combine like terms: 30 + -12 = 18 18 + -11X + X2 = 12 + -12 Combine like terms: 12 + -12 = 0 18 + -11X + X2 = 0 Factor a trinomial. (2 + -1X)(9 + -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 '(9 + -1X)' equal to zero and attempt to solve: Simplifying 9 + -1X = 0 Solving 9 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1X = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1X = 0 + -9 -1X = 0 + -9 Combine like terms: 0 + -9 = -9 -1X = -9 Divide each side by '-1'. X = 9 Simplifying X = 9Solution
X = {2, 9}
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