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Simplifying -1(x + 3)(4x + -5) = 0 Reorder the terms: -1(3 + x)(4x + -5) = 0 Reorder the terms: -1(3 + x)(-5 + 4x) = 0 Multiply (3 + x) * (-5 + 4x) -1(3(-5 + 4x) + x(-5 + 4x)) = 0 -1((-5 * 3 + 4x * 3) + x(-5 + 4x)) = 0 -1((-15 + 12x) + x(-5 + 4x)) = 0 -1(-15 + 12x + (-5 * x + 4x * x)) = 0 -1(-15 + 12x + (-5x + 4x2)) = 0 Combine like terms: 12x + -5x = 7x -1(-15 + 7x + 4x2) = 0 (-15 * -1 + 7x * -1 + 4x2 * -1) = 0 (15 + -7x + -4x2) = 0 Solving 15 + -7x + -4x2 = 0 Solving for variable 'x'. Factor a trinomial. (5 + -4x)(3 + x) = 0Subproblem 1
Set the factor '(5 + -4x)' equal to zero and attempt to solve: Simplifying 5 + -4x = 0 Solving 5 + -4x = 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 + -4x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -4x = 0 + -5 -4x = 0 + -5 Combine like terms: 0 + -5 = -5 -4x = -5 Divide each side by '-4'. x = 1.25 Simplifying x = 1.25Subproblem 2
Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3Solution
x = {1.25, -3}
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