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Simplifying 20x + -60 + 20x + 60 + -7x2 + 63 = 0 Reorder the terms: -60 + 60 + 63 + 20x + 20x + -7x2 = 0 Combine like terms: -60 + 60 = 0 0 + 63 + 20x + 20x + -7x2 = 0 63 + 20x + 20x + -7x2 = 0 Combine like terms: 20x + 20x = 40x 63 + 40x + -7x2 = 0 Solving 63 + 40x + -7x2 = 0 Solving for variable 'x'. Factor a trinomial. (7 + -1x)(9 + 7x) = 0Subproblem 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 '(9 + 7x)' equal to zero and attempt to solve: Simplifying 9 + 7x = 0 Solving 9 + 7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 7x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 7x = 0 + -9 7x = 0 + -9 Combine like terms: 0 + -9 = -9 7x = -9 Divide each side by '7'. x = -1.285714286 Simplifying x = -1.285714286Solution
x = {7, -1.285714286}
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