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Simplifying (x + 10)(x + 15) = 0 Reorder the terms: (10 + x)(x + 15) = 0 Reorder the terms: (10 + x)(15 + x) = 0 Multiply (10 + x) * (15 + x) (10(15 + x) + x(15 + x)) = 0 ((15 * 10 + x * 10) + x(15 + x)) = 0 ((150 + 10x) + x(15 + x)) = 0 (150 + 10x + (15 * x + x * x)) = 0 (150 + 10x + (15x + x2)) = 0 Combine like terms: 10x + 15x = 25x (150 + 25x + x2) = 0 Solving 150 + 25x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (15 + x)(10 + x) = 0Subproblem 1
Set the factor '(15 + x)' equal to zero and attempt to solve: Simplifying 15 + x = 0 Solving 15 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + x = 0 + -15 x = 0 + -15 Combine like terms: 0 + -15 = -15 x = -15 Simplifying x = -15Subproblem 2
Set the factor '(10 + x)' equal to zero and attempt to solve: Simplifying 10 + x = 0 Solving 10 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + x = 0 + -10 x = 0 + -10 Combine like terms: 0 + -10 = -10 x = -10 Simplifying x = -10Solution
x = {-15, -10}
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