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Simplifying -39x2 + x + -12 = 0 Reorder the terms: -12 + x + -39x2 = 0 Solving -12 + x + -39x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -39 the coefficient of the squared term: Divide each side by '-39'. 0.3076923077 + -0.02564102564x + x2 = 0 Move the constant term to the right: Add '-0.3076923077' to each side of the equation. 0.3076923077 + -0.02564102564x + -0.3076923077 + x2 = 0 + -0.3076923077 Reorder the terms: 0.3076923077 + -0.3076923077 + -0.02564102564x + x2 = 0 + -0.3076923077 Combine like terms: 0.3076923077 + -0.3076923077 = 0.0000000000 0.0000000000 + -0.02564102564x + x2 = 0 + -0.3076923077 -0.02564102564x + x2 = 0 + -0.3076923077 Combine like terms: 0 + -0.3076923077 = -0.3076923077 -0.02564102564x + x2 = -0.3076923077 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -0.02564102564x + 0.25 + x2 = -0.3076923077 + 0.25 Reorder the terms: 0.25 + -0.02564102564x + x2 = -0.3076923077 + 0.25 Combine like terms: -0.3076923077 + 0.25 = -0.0576923077 0.25 + -0.02564102564x + x2 = -0.0576923077 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -0.0576923077 Can't calculate square root of the right side. The solution to this equation could not be determined.
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