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Simplifying (a + 4)(a + 2) = 0 Reorder the terms: (4 + a)(a + 2) = 0 Reorder the terms: (4 + a)(2 + a) = 0 Multiply (4 + a) * (2 + a) (4(2 + a) + a(2 + a)) = 0 ((2 * 4 + a * 4) + a(2 + a)) = 0 ((8 + 4a) + a(2 + a)) = 0 (8 + 4a + (2 * a + a * a)) = 0 (8 + 4a + (2a + a2)) = 0 Combine like terms: 4a + 2a = 6a (8 + 6a + a2) = 0 Solving 8 + 6a + a2 = 0 Solving for variable 'a'. Factor a trinomial. (4 + a)(2 + a) = 0Subproblem 1
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 = -4Subproblem 2
Set the factor '(2 + a)' equal to zero and attempt to solve: Simplifying 2 + a = 0 Solving 2 + a = 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 + a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + a = 0 + -2 a = 0 + -2 Combine like terms: 0 + -2 = -2 a = -2 Simplifying a = -2Solution
a = {-4, -2}
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