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Simplifying (x + -12)(7x + -7) = 0 Reorder the terms: (-12 + x)(7x + -7) = 0 Reorder the terms: (-12 + x)(-7 + 7x) = 0 Multiply (-12 + x) * (-7 + 7x) (-12(-7 + 7x) + x(-7 + 7x)) = 0 ((-7 * -12 + 7x * -12) + x(-7 + 7x)) = 0 ((84 + -84x) + x(-7 + 7x)) = 0 (84 + -84x + (-7 * x + 7x * x)) = 0 (84 + -84x + (-7x + 7x2)) = 0 Combine like terms: -84x + -7x = -91x (84 + -91x + 7x2) = 0 Solving 84 + -91x + 7x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '7'. 7(12 + -13x + x2) = 0 Factor a trinomial. 7((1 + -1x)(12 + -1x)) = 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 '(12 + -1x)' equal to zero and attempt to solve: Simplifying 12 + -1x = 0 Solving 12 + -1x = 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 + -1x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1x = 0 + -12 -1x = 0 + -12 Combine like terms: 0 + -12 = -12 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12Solution
x = {1, 12}
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