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Simplifying (x + -5)(2x + 5) = 0 Reorder the terms: (-5 + x)(2x + 5) = 0 Reorder the terms: (-5 + x)(5 + 2x) = 0 Multiply (-5 + x) * (5 + 2x) (-5(5 + 2x) + x(5 + 2x)) = 0 ((5 * -5 + 2x * -5) + x(5 + 2x)) = 0 ((-25 + -10x) + x(5 + 2x)) = 0 (-25 + -10x + (5 * x + 2x * x)) = 0 (-25 + -10x + (5x + 2x2)) = 0 Combine like terms: -10x + 5x = -5x (-25 + -5x + 2x2) = 0 Solving -25 + -5x + 2x2 = 0 Solving for variable 'x'. Factor a trinomial. (-5 + -2x)(5 + -1x) = 0Subproblem 1
Set the factor '(-5 + -2x)' equal to zero and attempt to solve: Simplifying -5 + -2x = 0 Solving -5 + -2x = 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 + -2x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2x = 0 + 5 -2x = 0 + 5 Combine like terms: 0 + 5 = 5 -2x = 5 Divide each side by '-2'. x = -2.5 Simplifying x = -2.5Subproblem 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, 5}
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