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Simplifying 0 = (x + 2)(x + 4) Reorder the terms: 0 = (2 + x)(x + 4) Reorder the terms: 0 = (2 + x)(4 + x) Multiply (2 + x) * (4 + x) 0 = (2(4 + x) + x(4 + x)) 0 = ((4 * 2 + x * 2) + x(4 + x)) 0 = ((8 + 2x) + x(4 + x)) 0 = (8 + 2x + (4 * x + x * x)) 0 = (8 + 2x + (4x + x2)) Combine like terms: 2x + 4x = 6x 0 = (8 + 6x + x2) Solving 0 = 8 + 6x + x2 Solving for variable 'x'. Combine like terms: 0 + -8 = -8 -8 + -6x + -1x2 = 8 + 6x + x2 + -8 + -6x + -1x2 Reorder the terms: -8 + -6x + -1x2 = 8 + -8 + 6x + -6x + x2 + -1x2 Combine like terms: 8 + -8 = 0 -8 + -6x + -1x2 = 0 + 6x + -6x + x2 + -1x2 -8 + -6x + -1x2 = 6x + -6x + x2 + -1x2 Combine like terms: 6x + -6x = 0 -8 + -6x + -1x2 = 0 + x2 + -1x2 -8 + -6x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -8 + -6x + -1x2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(8 + 6x + x2) = 0 Factor a trinomial. -1((4 + x)(2 + x)) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4Subproblem 2
Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2Solution
x = {-4, -2}
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