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Simplifying (2x + 4)(x + -5) = 0 Reorder the terms: (4 + 2x)(x + -5) = 0 Reorder the terms: (4 + 2x)(-5 + x) = 0 Multiply (4 + 2x) * (-5 + x) (4(-5 + x) + 2x * (-5 + x)) = 0 ((-5 * 4 + x * 4) + 2x * (-5 + x)) = 0 ((-20 + 4x) + 2x * (-5 + x)) = 0 (-20 + 4x + (-5 * 2x + x * 2x)) = 0 (-20 + 4x + (-10x + 2x2)) = 0 Combine like terms: 4x + -10x = -6x (-20 + -6x + 2x2) = 0 Solving -20 + -6x + 2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-10 + -3x + x2) = 0 Factor a trinomial. 2((-2 + -1x)(5 + -1x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2Subproblem 2
Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5Solution
x = {-2, 5}
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