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Simplifying (x + -15)(x + 18) = 0 Reorder the terms: (-15 + x)(x + 18) = 0 Reorder the terms: (-15 + x)(18 + x) = 0 Multiply (-15 + x) * (18 + x) (-15(18 + x) + x(18 + x)) = 0 ((18 * -15 + x * -15) + x(18 + x)) = 0 ((-270 + -15x) + x(18 + x)) = 0 (-270 + -15x + (18 * x + x * x)) = 0 (-270 + -15x + (18x + x2)) = 0 Combine like terms: -15x + 18x = 3x (-270 + 3x + x2) = 0 Solving -270 + 3x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (-18 + -1x)(15 + -1x) = 0Subproblem 1
Set the factor '(-18 + -1x)' equal to zero and attempt to solve: Simplifying -18 + -1x = 0 Solving -18 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + -1x = 0 + 18 Combine like terms: -18 + 18 = 0 0 + -1x = 0 + 18 -1x = 0 + 18 Combine like terms: 0 + 18 = 18 -1x = 18 Divide each side by '-1'. x = -18 Simplifying x = -18Subproblem 2
Set the factor '(15 + -1x)' equal to zero and attempt to solve: Simplifying 15 + -1x = 0 Solving 15 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1x = 0 + -15 -1x = 0 + -15 Combine like terms: 0 + -15 = -15 -1x = -15 Divide each side by '-1'. x = 15 Simplifying x = 15Solution
x = {-18, 15}
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