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Simplifying (7a + -14)(a + 8) = 0 Reorder the terms: (-14 + 7a)(a + 8) = 0 Reorder the terms: (-14 + 7a)(8 + a) = 0 Multiply (-14 + 7a) * (8 + a) (-14(8 + a) + 7a * (8 + a)) = 0 ((8 * -14 + a * -14) + 7a * (8 + a)) = 0 ((-112 + -14a) + 7a * (8 + a)) = 0 (-112 + -14a + (8 * 7a + a * 7a)) = 0 (-112 + -14a + (56a + 7a2)) = 0 Combine like terms: -14a + 56a = 42a (-112 + 42a + 7a2) = 0 Solving -112 + 42a + 7a2 = 0 Solving for variable 'a'. Factor out the Greatest Common Factor (GCF), '7'. 7(-16 + 6a + a2) = 0 Factor a trinomial. 7((-8 + -1a)(2 + -1a)) = 0 Ignore the factor 7.Subproblem 1
Set the factor '(-8 + -1a)' equal to zero and attempt to solve: Simplifying -8 + -1a = 0 Solving -8 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1a = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1a = 0 + 8 -1a = 0 + 8 Combine like terms: 0 + 8 = 8 -1a = 8 Divide each side by '-1'. a = -8 Simplifying a = -8Subproblem 2
Set the factor '(2 + -1a)' equal to zero and attempt to solve: Simplifying 2 + -1a = 0 Solving 2 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1a = 0 + -2 -1a = 0 + -2 Combine like terms: 0 + -2 = -2 -1a = -2 Divide each side by '-1'. a = 2 Simplifying a = 2Solution
a = {-8, 2}
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