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Simplifying 0 = 2x2 + 5x + 3 Reorder the terms: 0 = 3 + 5x + 2x2 Solving 0 = 3 + 5x + 2x2 Solving for variable 'x'. Combine like terms: 0 + -3 = -3 -3 + -5x + -2x2 = 3 + 5x + 2x2 + -3 + -5x + -2x2 Reorder the terms: -3 + -5x + -2x2 = 3 + -3 + 5x + -5x + 2x2 + -2x2 Combine like terms: 3 + -3 = 0 -3 + -5x + -2x2 = 0 + 5x + -5x + 2x2 + -2x2 -3 + -5x + -2x2 = 5x + -5x + 2x2 + -2x2 Combine like terms: 5x + -5x = 0 -3 + -5x + -2x2 = 0 + 2x2 + -2x2 -3 + -5x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -3 + -5x + -2x2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(3 + 5x + 2x2) = 0 Factor a trinomial. -1((3 + 2x)(1 + x)) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(3 + 2x)' equal to zero and attempt to solve: Simplifying 3 + 2x = 0 Solving 3 + 2x = 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 + 2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 0 + -3 2x = 0 + -3 Combine like terms: 0 + -3 = -3 2x = -3 Divide each side by '2'. x = -1.5 Simplifying x = -1.5Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Solution
x = {-1.5, -1}
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