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Simplifying 3(2x + 1)(x + 5) = 0 Reorder the terms: 3(1 + 2x)(x + 5) = 0 Reorder the terms: 3(1 + 2x)(5 + x) = 0 Multiply (1 + 2x) * (5 + x) 3(1(5 + x) + 2x * (5 + x)) = 0 3((5 * 1 + x * 1) + 2x * (5 + x)) = 0 3((5 + 1x) + 2x * (5 + x)) = 0 3(5 + 1x + (5 * 2x + x * 2x)) = 0 3(5 + 1x + (10x + 2x2)) = 0 Combine like terms: 1x + 10x = 11x 3(5 + 11x + 2x2) = 0 (5 * 3 + 11x * 3 + 2x2 * 3) = 0 (15 + 33x + 6x2) = 0 Solving 15 + 33x + 6x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3'. 3(5 + 11x + 2x2) = 0 Factor a trinomial. 3((5 + x)(1 + 2x)) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5Subproblem 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 = {-5, -0.5}
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