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Simplifying (x + -7)(x + -11) = 0 Reorder the terms: (-7 + x)(x + -11) = 0 Reorder the terms: (-7 + x)(-11 + x) = 0 Multiply (-7 + x) * (-11 + x) (-7(-11 + x) + x(-11 + x)) = 0 ((-11 * -7 + x * -7) + x(-11 + x)) = 0 ((77 + -7x) + x(-11 + x)) = 0 (77 + -7x + (-11 * x + x * x)) = 0 (77 + -7x + (-11x + x2)) = 0 Combine like terms: -7x + -11x = -18x (77 + -18x + x2) = 0 Solving 77 + -18x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (7 + -1x)(11 + -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 '(11 + -1x)' equal to zero and attempt to solve: Simplifying 11 + -1x = 0 Solving 11 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -1x = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -1x = 0 + -11 -1x = 0 + -11 Combine like terms: 0 + -11 = -11 -1x = -11 Divide each side by '-1'. x = 11 Simplifying x = 11Solution
x = {7, 11}
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