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Simplifying (x + 3)(x + -8) = 42 Reorder the terms: (3 + x)(x + -8) = 42 Reorder the terms: (3 + x)(-8 + x) = 42 Multiply (3 + x) * (-8 + x) (3(-8 + x) + x(-8 + x)) = 42 ((-8 * 3 + x * 3) + x(-8 + x)) = 42 ((-24 + 3x) + x(-8 + x)) = 42 (-24 + 3x + (-8 * x + x * x)) = 42 (-24 + 3x + (-8x + x2)) = 42 Combine like terms: 3x + -8x = -5x (-24 + -5x + x2) = 42 Solving -24 + -5x + x2 = 42 Solving for variable 'x'. Reorder the terms: -24 + -42 + -5x + x2 = 42 + -42 Combine like terms: -24 + -42 = -66 -66 + -5x + x2 = 42 + -42 Combine like terms: 42 + -42 = 0 -66 + -5x + x2 = 0 Factor a trinomial. (-6 + -1x)(11 + -1x) = 0Subproblem 1
Set the factor '(-6 + -1x)' equal to zero and attempt to solve: Simplifying -6 + -1x = 0 Solving -6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1x = 0 + 6 -1x = 0 + 6 Combine like terms: 0 + 6 = 6 -1x = 6 Divide each side by '-1'. x = -6 Simplifying x = -6Subproblem 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 = {-6, 11}
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