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Simplifying 0 = (2 + a)(a + 3) Reorder the terms: 0 = (2 + a)(3 + a) Multiply (2 + a) * (3 + a) 0 = (2(3 + a) + a(3 + a)) 0 = ((3 * 2 + a * 2) + a(3 + a)) 0 = ((6 + 2a) + a(3 + a)) 0 = (6 + 2a + (3 * a + a * a)) 0 = (6 + 2a + (3a + a2)) Combine like terms: 2a + 3a = 5a 0 = (6 + 5a + a2) Solving 0 = 6 + 5a + a2 Solving for variable 'a'. Combine like terms: 0 + -6 = -6 -6 + -5a + -1a2 = 6 + 5a + a2 + -6 + -5a + -1a2 Reorder the terms: -6 + -5a + -1a2 = 6 + -6 + 5a + -5a + a2 + -1a2 Combine like terms: 6 + -6 = 0 -6 + -5a + -1a2 = 0 + 5a + -5a + a2 + -1a2 -6 + -5a + -1a2 = 5a + -5a + a2 + -1a2 Combine like terms: 5a + -5a = 0 -6 + -5a + -1a2 = 0 + a2 + -1a2 -6 + -5a + -1a2 = a2 + -1a2 Combine like terms: a2 + -1a2 = 0 -6 + -5a + -1a2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(6 + 5a + a2) = 0 Factor a trinomial. -1((3 + a)(2 + a)) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(3 + a)' equal to zero and attempt to solve: Simplifying 3 + a = 0 Solving 3 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + a = 0 + -3 a = 0 + -3 Combine like terms: 0 + -3 = -3 a = -3 Simplifying a = -3Subproblem 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 = {-3, -2}
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