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Simplifying (x + -3)(x + 9) = 0 Reorder the terms: (-3 + x)(x + 9) = 0 Reorder the terms: (-3 + x)(9 + x) = 0 Multiply (-3 + x) * (9 + x) (-3(9 + x) + x(9 + x)) = 0 ((9 * -3 + x * -3) + x(9 + x)) = 0 ((-27 + -3x) + x(9 + x)) = 0 (-27 + -3x + (9 * x + x * x)) = 0 (-27 + -3x + (9x + x2)) = 0 Combine like terms: -3x + 9x = 6x (-27 + 6x + x2) = 0 Solving -27 + 6x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (-9 + -1x)(3 + -1x) = 0Subproblem 1
Set the factor '(-9 + -1x)' equal to zero and attempt to solve: Simplifying -9 + -1x = 0 Solving -9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1x = 0 + 9 -1x = 0 + 9 Combine like terms: 0 + 9 = 9 -1x = 9 Divide each side by '-1'. x = -9 Simplifying x = -9Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Solution
x = {-9, 3}
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