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Simplifying 0 = 49 + x2 + 14x Reorder the terms: 0 = 49 + 14x + x2 Solving 0 = 49 + 14x + x2 Solving for variable 'x'. Combine like terms: 0 + -49 = -49 -49 + -14x + -1x2 = 49 + 14x + x2 + -49 + -14x + -1x2 Reorder the terms: -49 + -14x + -1x2 = 49 + -49 + 14x + -14x + x2 + -1x2 Combine like terms: 49 + -49 = 0 -49 + -14x + -1x2 = 0 + 14x + -14x + x2 + -1x2 -49 + -14x + -1x2 = 14x + -14x + x2 + -1x2 Combine like terms: 14x + -14x = 0 -49 + -14x + -1x2 = 0 + x2 + -1x2 -49 + -14x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -49 + -14x + -1x2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(49 + 14x + x2) = 0 Factor a trinomial. -1((7 + x)(7 + x)) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7Subproblem 2
Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7Solution
x = {-7, -7}
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