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Simplifying 3(x + 1)(x + 1) + 13(x + 1) + 4 = 0 Reorder the terms: 3(1 + x)(x + 1) + 13(x + 1) + 4 = 0 Reorder the terms: 3(1 + x)(1 + x) + 13(x + 1) + 4 = 0 Multiply (1 + x) * (1 + x) 3(1(1 + x) + x(1 + x)) + 13(x + 1) + 4 = 0 3((1 * 1 + x * 1) + x(1 + x)) + 13(x + 1) + 4 = 0 3((1 + 1x) + x(1 + x)) + 13(x + 1) + 4 = 0 3(1 + 1x + (1 * x + x * x)) + 13(x + 1) + 4 = 0 3(1 + 1x + (1x + x2)) + 13(x + 1) + 4 = 0 Combine like terms: 1x + 1x = 2x 3(1 + 2x + x2) + 13(x + 1) + 4 = 0 (1 * 3 + 2x * 3 + x2 * 3) + 13(x + 1) + 4 = 0 (3 + 6x + 3x2) + 13(x + 1) + 4 = 0 Reorder the terms: 3 + 6x + 3x2 + 13(1 + x) + 4 = 0 3 + 6x + 3x2 + (1 * 13 + x * 13) + 4 = 0 3 + 6x + 3x2 + (13 + 13x) + 4 = 0 Reorder the terms: 3 + 13 + 4 + 6x + 13x + 3x2 = 0 Combine like terms: 3 + 13 = 16 16 + 4 + 6x + 13x + 3x2 = 0 Combine like terms: 16 + 4 = 20 20 + 6x + 13x + 3x2 = 0 Combine like terms: 6x + 13x = 19x 20 + 19x + 3x2 = 0 Solving 20 + 19x + 3x2 = 0 Solving for variable 'x'. Factor a trinomial. (5 + x)(4 + 3x) = 0Subproblem 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 '(4 + 3x)' equal to zero and attempt to solve: Simplifying 4 + 3x = 0 Solving 4 + 3x = 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 + 3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 3x = 0 + -4 3x = 0 + -4 Combine like terms: 0 + -4 = -4 3x = -4 Divide each side by '3'. x = -1.333333333 Simplifying x = -1.333333333Solution
x = {-5, -1.333333333}
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