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Simplifying (-7 + -1x)(2 + -1x) = 0 Multiply (-7 + -1x) * (2 + -1x) (-7(2 + -1x) + -1x * (2 + -1x)) = 0 ((2 * -7 + -1x * -7) + -1x * (2 + -1x)) = 0 ((-14 + 7x) + -1x * (2 + -1x)) = 0 (-14 + 7x + (2 * -1x + -1x * -1x)) = 0 (-14 + 7x + (-2x + 1x2)) = 0 Combine like terms: 7x + -2x = 5x (-14 + 5x + 1x2) = 0 Solving -14 + 5x + 1x2 = 0 Solving for variable 'x'. Factor a trinomial. (-7 + -1x)(2 + -1x) = 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 '(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 = 2Solution
x = {-7, 2}
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