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