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Simplifying (2x2 + -2x + 3) + -1(x2 + 5x + -7) = 0 Reorder the terms: (3 + -2x + 2x2) + -1(x2 + 5x + -7) = 0 Remove parenthesis around (3 + -2x + 2x2) 3 + -2x + 2x2 + -1(x2 + 5x + -7) = 0 Reorder the terms: 3 + -2x + 2x2 + -1(-7 + 5x + x2) = 0 3 + -2x + 2x2 + (-7 * -1 + 5x * -1 + x2 * -1) = 0 3 + -2x + 2x2 + (7 + -5x + -1x2) = 0 Reorder the terms: 3 + 7 + -2x + -5x + 2x2 + -1x2 = 0 Combine like terms: 3 + 7 = 10 10 + -2x + -5x + 2x2 + -1x2 = 0 Combine like terms: -2x + -5x = -7x 10 + -7x + 2x2 + -1x2 = 0 Combine like terms: 2x2 + -1x2 = 1x2 10 + -7x + 1x2 = 0 Solving 10 + -7x + 1x2 = 0 Solving for variable 'x'. 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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