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Simplifying 0.5x2 + -2.5x + 12 = 0 Reorder the terms: 12 + -2.5x + 0.5x2 = 0 Solving 12 + -2.5x + 0.5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.5 the coefficient of the squared term: Divide each side by '0.5'. 24 + -5x + x2 = 0 Move the constant term to the right: Add '-24' to each side of the equation. 24 + -5x + -24 + x2 = 0 + -24 Reorder the terms: 24 + -24 + -5x + x2 = 0 + -24 Combine like terms: 24 + -24 = 0 0 + -5x + x2 = 0 + -24 -5x + x2 = 0 + -24 Combine like terms: 0 + -24 = -24 -5x + x2 = -24 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = -24 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -24 + 6.25 Combine like terms: -24 + 6.25 = -17.75 6.25 + -5x + x2 = -17.75 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = -17.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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