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Simplifying x2 + 0x + 15 = 9 + -5x Anything times zero is zero. x2 + 0x + 15 = 9 + -5x Reorder the terms: 0 + 15 + x2 = 9 + -5x Combine like terms: 0 + 15 = 15 15 + x2 = 9 + -5x Solving 15 + x2 = 9 + -5x Solving for variable 'x'. Reorder the terms: 15 + -9 + 5x + x2 = 9 + -5x + -9 + 5x Combine like terms: 15 + -9 = 6 6 + 5x + x2 = 9 + -5x + -9 + 5x Reorder the terms: 6 + 5x + x2 = 9 + -9 + -5x + 5x Combine like terms: 9 + -9 = 0 6 + 5x + x2 = 0 + -5x + 5x 6 + 5x + x2 = -5x + 5x Combine like terms: -5x + 5x = 0 6 + 5x + x2 = 0 Factor a trinomial. (3 + x)(2 + x) = 0Subproblem 1
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 = -3Subproblem 2
Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2Solution
x = {-3, -2}
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