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Simplifying -28x2 + 49x = -105 Reorder the terms: 49x + -28x2 = -105 Solving 49x + -28x2 = -105 Solving for variable 'x'. Reorder the terms: 105 + 49x + -28x2 = -105 + 105 Combine like terms: -105 + 105 = 0 105 + 49x + -28x2 = 0 Factor out the Greatest Common Factor (GCF), '7'. 7(15 + 7x + -4x2) = 0 Factor a trinomial. 7((3 + -1x)(5 + 4x)) = 0 Ignore the factor 7.Subproblem 1
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 = 3Subproblem 2
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 = -1.25Solution
x = {3, -1.25}
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