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