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Simplifying 2x2 + -3x + -9 = -4 Reorder the terms: -9 + -3x + 2x2 = -4 Solving -9 + -3x + 2x2 = -4 Solving for variable 'x'. Reorder the terms: -9 + 4 + -3x + 2x2 = -4 + 4 Combine like terms: -9 + 4 = -5 -5 + -3x + 2x2 = -4 + 4 Combine like terms: -4 + 4 = 0 -5 + -3x + 2x2 = 0 Factor a trinomial. (-1 + -1x)(5 + -2x) = 0Subproblem 1
Set the factor '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Divide each side by '-1'. x = -1 Simplifying x = -1Subproblem 2
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 = 2.5Solution
x = {-1, 2.5}
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