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Simplifying 0 = (x + 3)(x + -4) Reorder the terms: 0 = (3 + x)(x + -4) Reorder the terms: 0 = (3 + x)(-4 + x) Multiply (3 + x) * (-4 + x) 0 = (3(-4 + x) + x(-4 + x)) 0 = ((-4 * 3 + x * 3) + x(-4 + x)) 0 = ((-12 + 3x) + x(-4 + x)) 0 = (-12 + 3x + (-4 * x + x * x)) 0 = (-12 + 3x + (-4x + x2)) Combine like terms: 3x + -4x = -1x 0 = (-12 + -1x + x2) Solving 0 = -12 + -1x + x2 Solving for variable 'x'. Combine like terms: 0 + 12 = 12 12 + x + -1x2 = -12 + -1x + x2 + 12 + x + -1x2 Reorder the terms: 12 + x + -1x2 = -12 + 12 + -1x + x + x2 + -1x2 Combine like terms: -12 + 12 = 0 12 + x + -1x2 = 0 + -1x + x + x2 + -1x2 12 + x + -1x2 = -1x + x + x2 + -1x2 Combine like terms: -1x + x = 0 12 + x + -1x2 = 0 + x2 + -1x2 12 + x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 12 + x + -1x2 = 0 Factor a trinomial. (4 + -1x)(3 + x) = 0Subproblem 1
Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4Subproblem 2
Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3Solution
x = {4, -3}
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