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Simplifying (3x + 1)(5x + -5) = 100 Reorder the terms: (1 + 3x)(5x + -5) = 100 Reorder the terms: (1 + 3x)(-5 + 5x) = 100 Multiply (1 + 3x) * (-5 + 5x) (1(-5 + 5x) + 3x * (-5 + 5x)) = 100 ((-5 * 1 + 5x * 1) + 3x * (-5 + 5x)) = 100 ((-5 + 5x) + 3x * (-5 + 5x)) = 100 (-5 + 5x + (-5 * 3x + 5x * 3x)) = 100 (-5 + 5x + (-15x + 15x2)) = 100 Combine like terms: 5x + -15x = -10x (-5 + -10x + 15x2) = 100 Solving -5 + -10x + 15x2 = 100 Solving for variable 'x'. Reorder the terms: -5 + -100 + -10x + 15x2 = 100 + -100 Combine like terms: -5 + -100 = -105 -105 + -10x + 15x2 = 100 + -100 Combine like terms: 100 + -100 = 0 -105 + -10x + 15x2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(-21 + -2x + 3x2) = 0 Factor a trinomial. 5((-7 + -3x)(3 + -1x)) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Solution
x = {-2.333333333, 3}
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