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Simplifying 7x2 = -15 + 26x Solving 7x2 = -15 + 26x Solving for variable 'x'. Reorder the terms: 15 + -26x + 7x2 = -15 + 26x + 15 + -26x Reorder the terms: 15 + -26x + 7x2 = -15 + 15 + 26x + -26x Combine like terms: -15 + 15 = 0 15 + -26x + 7x2 = 0 + 26x + -26x 15 + -26x + 7x2 = 26x + -26x Combine like terms: 26x + -26x = 0 15 + -26x + 7x2 = 0 Factor a trinomial. (5 + -7x)(3 + -1x) = 0Subproblem 1
Set the factor '(5 + -7x)' equal to zero and attempt to solve: Simplifying 5 + -7x = 0 Solving 5 + -7x = 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 + -7x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -7x = 0 + -5 -7x = 0 + -5 Combine like terms: 0 + -5 = -5 -7x = -5 Divide each side by '-7'. x = 0.7142857143 Simplifying x = 0.7142857143Subproblem 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 = {0.7142857143, 3}
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