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Simplifying 2x(x + 6) + -3 = 11 Reorder the terms: 2x(6 + x) + -3 = 11 (6 * 2x + x * 2x) + -3 = 11 (12x + 2x2) + -3 = 11 Reorder the terms: -3 + 12x + 2x2 = 11 Solving -3 + 12x + 2x2 = 11 Solving for variable 'x'. Reorder the terms: -3 + -11 + 12x + 2x2 = 11 + -11 Combine like terms: -3 + -11 = -14 -14 + 12x + 2x2 = 11 + -11 Combine like terms: 11 + -11 = 0 -14 + 12x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-7 + 6x + x2) = 0 Factor a trinomial. 2((-7 + -1x)(1 + -1x)) = 0 Ignore the factor 2.Subproblem 1
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 = -7Subproblem 2
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 = 1Solution
x = {-7, 1}
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