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Simplifying 0 = -1x2 + 7x + -10 Reorder the terms: 0 = -10 + 7x + -1x2 Solving 0 = -10 + 7x + -1x2 Solving for variable 'x'. Combine like terms: 0 + 10 = 10 10 + -7x + x2 = -10 + 7x + -1x2 + 10 + -7x + x2 Reorder the terms: 10 + -7x + x2 = -10 + 10 + 7x + -7x + -1x2 + x2 Combine like terms: -10 + 10 = 0 10 + -7x + x2 = 0 + 7x + -7x + -1x2 + x2 10 + -7x + x2 = 7x + -7x + -1x2 + x2 Combine like terms: 7x + -7x = 0 10 + -7x + x2 = 0 + -1x2 + x2 10 + -7x + x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 10 + -7x + x2 = 0 Factor a trinomial. (2 + -1x)(5 + -1x) = 0Subproblem 1
Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2Subproblem 2
Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5Solution
x = {2, 5}
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