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Simplifying (x + 2)(x + 18) = 0 Reorder the terms: (2 + x)(x + 18) = 0 Reorder the terms: (2 + x)(18 + x) = 0 Multiply (2 + x) * (18 + x) (2(18 + x) + x(18 + x)) = 0 ((18 * 2 + x * 2) + x(18 + x)) = 0 ((36 + 2x) + x(18 + x)) = 0 (36 + 2x + (18 * x + x * x)) = 0 (36 + 2x + (18x + x2)) = 0 Combine like terms: 2x + 18x = 20x (36 + 20x + x2) = 0 Solving 36 + 20x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (18 + x)(2 + x) = 0Subproblem 1
Set the factor '(18 + x)' equal to zero and attempt to solve: Simplifying 18 + x = 0 Solving 18 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + x = 0 + -18 Combine like terms: 18 + -18 = 0 0 + x = 0 + -18 x = 0 + -18 Combine like terms: 0 + -18 = -18 x = -18 Simplifying x = -18Subproblem 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 = {-18, -2}
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