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Simplifying (4x + 2)(9 + x) = 0 Reorder the terms: (2 + 4x)(9 + x) = 0 Multiply (2 + 4x) * (9 + x) (2(9 + x) + 4x * (9 + x)) = 0 ((9 * 2 + x * 2) + 4x * (9 + x)) = 0 ((18 + 2x) + 4x * (9 + x)) = 0 (18 + 2x + (9 * 4x + x * 4x)) = 0 (18 + 2x + (36x + 4x2)) = 0 Combine like terms: 2x + 36x = 38x (18 + 38x + 4x2) = 0 Solving 18 + 38x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(9 + 19x + 2x2) = 0 Factor a trinomial. 2((9 + x)(1 + 2x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9Subproblem 2
Set the factor '(1 + 2x)' equal to zero and attempt to solve: Simplifying 1 + 2x = 0 Solving 1 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 0 + -1 2x = 0 + -1 Combine like terms: 0 + -1 = -1 2x = -1 Divide each side by '2'. x = -0.5 Simplifying x = -0.5Solution
x = {-9, -0.5}
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