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Simplifying 3x(x + 1) + -5(x + 1) = 0 Reorder the terms: 3x(1 + x) + -5(x + 1) = 0 (1 * 3x + x * 3x) + -5(x + 1) = 0 (3x + 3x2) + -5(x + 1) = 0 Reorder the terms: 3x + 3x2 + -5(1 + x) = 0 3x + 3x2 + (1 * -5 + x * -5) = 0 3x + 3x2 + (-5 + -5x) = 0 Reorder the terms: -5 + 3x + -5x + 3x2 = 0 Combine like terms: 3x + -5x = -2x -5 + -2x + 3x2 = 0 Solving -5 + -2x + 3x2 = 0 Solving for variable 'x'. Factor a trinomial. (-1 + -1x)(5 + -3x) = 0Subproblem 1
Set the factor '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 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 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Divide each side by '-1'. x = -1 Simplifying x = -1Subproblem 2
Set the factor '(5 + -3x)' equal to zero and attempt to solve: Simplifying 5 + -3x = 0 Solving 5 + -3x = 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 + -3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3x = 0 + -5 -3x = 0 + -5 Combine like terms: 0 + -5 = -5 -3x = -5 Divide each side by '-3'. x = 1.666666667 Simplifying x = 1.666666667Solution
x = {-1, 1.666666667}
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