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Simplifying (x + 2)(x + 3) = 20 Reorder the terms: (2 + x)(x + 3) = 20 Reorder the terms: (2 + x)(3 + x) = 20 Multiply (2 + x) * (3 + x) (2(3 + x) + x(3 + x)) = 20 ((3 * 2 + x * 2) + x(3 + x)) = 20 ((6 + 2x) + x(3 + x)) = 20 (6 + 2x + (3 * x + x * x)) = 20 (6 + 2x + (3x + x2)) = 20 Combine like terms: 2x + 3x = 5x (6 + 5x + x2) = 20 Solving 6 + 5x + x2 = 20 Solving for variable 'x'. Reorder the terms: 6 + -20 + 5x + x2 = 20 + -20 Combine like terms: 6 + -20 = -14 -14 + 5x + x2 = 20 + -20 Combine like terms: 20 + -20 = 0 -14 + 5x + x2 = 0 Factor a trinomial. (-7 + -1x)(2 + -1x) = 0Subproblem 1
Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7Subproblem 2
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 = 2Solution
x = {-7, 2}
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