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Simplifying (x + 7)(x + 12) = 0 Reorder the terms: (7 + x)(x + 12) = 0 Reorder the terms: (7 + x)(12 + x) = 0 Multiply (7 + x) * (12 + x) (7(12 + x) + x(12 + x)) = 0 ((12 * 7 + x * 7) + x(12 + x)) = 0 ((84 + 7x) + x(12 + x)) = 0 (84 + 7x + (12 * x + x * x)) = 0 (84 + 7x + (12x + x2)) = 0 Combine like terms: 7x + 12x = 19x (84 + 19x + x2) = 0 Solving 84 + 19x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (12 + x)(7 + x) = 0Subproblem 1
Set the factor '(12 + x)' equal to zero and attempt to solve: Simplifying 12 + x = 0 Solving 12 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + x = 0 + -12 x = 0 + -12 Combine like terms: 0 + -12 = -12 x = -12 Simplifying x = -12Subproblem 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 = {-12, -7}
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