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Simplifying (x + -7)(3x + -5) = (x + -7)(7x + 5) Reorder the terms: (-7 + x)(3x + -5) = (x + -7)(7x + 5) Reorder the terms: (-7 + x)(-5 + 3x) = (x + -7)(7x + 5) Multiply (-7 + x) * (-5 + 3x) (-7(-5 + 3x) + x(-5 + 3x)) = (x + -7)(7x + 5) ((-5 * -7 + 3x * -7) + x(-5 + 3x)) = (x + -7)(7x + 5) ((35 + -21x) + x(-5 + 3x)) = (x + -7)(7x + 5) (35 + -21x + (-5 * x + 3x * x)) = (x + -7)(7x + 5) (35 + -21x + (-5x + 3x2)) = (x + -7)(7x + 5) Combine like terms: -21x + -5x = -26x (35 + -26x + 3x2) = (x + -7)(7x + 5) Reorder the terms: 35 + -26x + 3x2 = (-7 + x)(7x + 5) Reorder the terms: 35 + -26x + 3x2 = (-7 + x)(5 + 7x) Multiply (-7 + x) * (5 + 7x) 35 + -26x + 3x2 = (-7(5 + 7x) + x(5 + 7x)) 35 + -26x + 3x2 = ((5 * -7 + 7x * -7) + x(5 + 7x)) 35 + -26x + 3x2 = ((-35 + -49x) + x(5 + 7x)) 35 + -26x + 3x2 = (-35 + -49x + (5 * x + 7x * x)) 35 + -26x + 3x2 = (-35 + -49x + (5x + 7x2)) Combine like terms: -49x + 5x = -44x 35 + -26x + 3x2 = (-35 + -44x + 7x2) Solving 35 + -26x + 3x2 = -35 + -44x + 7x2 Solving for variable 'x'. Reorder the terms: 35 + 35 + -26x + 44x + 3x2 + -7x2 = -35 + -44x + 7x2 + 35 + 44x + -7x2 Combine like terms: 35 + 35 = 70 70 + -26x + 44x + 3x2 + -7x2 = -35 + -44x + 7x2 + 35 + 44x + -7x2 Combine like terms: -26x + 44x = 18x 70 + 18x + 3x2 + -7x2 = -35 + -44x + 7x2 + 35 + 44x + -7x2 Combine like terms: 3x2 + -7x2 = -4x2 70 + 18x + -4x2 = -35 + -44x + 7x2 + 35 + 44x + -7x2 Reorder the terms: 70 + 18x + -4x2 = -35 + 35 + -44x + 44x + 7x2 + -7x2 Combine like terms: -35 + 35 = 0 70 + 18x + -4x2 = 0 + -44x + 44x + 7x2 + -7x2 70 + 18x + -4x2 = -44x + 44x + 7x2 + -7x2 Combine like terms: -44x + 44x = 0 70 + 18x + -4x2 = 0 + 7x2 + -7x2 70 + 18x + -4x2 = 7x2 + -7x2 Combine like terms: 7x2 + -7x2 = 0 70 + 18x + -4x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(35 + 9x + -2x2) = 0 Factor a trinomial. 2((7 + -1x)(5 + 2x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 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 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7Subproblem 2
Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 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 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5Solution
x = {7, -2.5}
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