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Simplifying 9x2 + 31X + 12 = 0 Reorder the terms: 12 + 31X + 9x2 = 0 Solving 12 + 31X + 9x2 = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + 31X + -12 + 9x2 = 0 + -12 Reorder the terms: 12 + -12 + 31X + 9x2 = 0 + -12 Combine like terms: 12 + -12 = 0 0 + 31X + 9x2 = 0 + -12 31X + 9x2 = 0 + -12 Combine like terms: 0 + -12 = -12 31X + 9x2 = -12 Add '-9x2' to each side of the equation. 31X + 9x2 + -9x2 = -12 + -9x2 Combine like terms: 9x2 + -9x2 = 0 31X + 0 = -12 + -9x2 31X = -12 + -9x2 Divide each side by '31'. X = -0.3870967742 + -0.2903225806x2 Simplifying X = -0.3870967742 + -0.2903225806x2
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