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Simplifying (a + 4)(a + 8) = 0 Reorder the terms: (4 + a)(a + 8) = 0 Reorder the terms: (4 + a)(8 + a) = 0 Multiply (4 + a) * (8 + a) (4(8 + a) + a(8 + a)) = 0 ((8 * 4 + a * 4) + a(8 + a)) = 0 ((32 + 4a) + a(8 + a)) = 0 (32 + 4a + (8 * a + a * a)) = 0 (32 + 4a + (8a + a2)) = 0 Combine like terms: 4a + 8a = 12a (32 + 12a + a2) = 0 Solving 32 + 12a + a2 = 0 Solving for variable 'a'. Factor a trinomial. (8 + a)(4 + a) = 0Subproblem 1
Set the factor '(8 + a)' equal to zero and attempt to solve: Simplifying 8 + a = 0 Solving 8 + a = 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 + a = 0 + -8 Combine like terms: 8 + -8 = 0 0 + a = 0 + -8 a = 0 + -8 Combine like terms: 0 + -8 = -8 a = -8 Simplifying a = -8Subproblem 2
Set the factor '(4 + a)' equal to zero and attempt to solve: Simplifying 4 + a = 0 Solving 4 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + a = 0 + -4 a = 0 + -4 Combine like terms: 0 + -4 = -4 a = -4 Simplifying a = -4Solution
a = {-8, -4}
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