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Simplifying -11x2 + 4x + -15 = 0 Reorder the terms: -15 + 4x + -11x2 = 0 Solving -15 + 4x + -11x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -11 the coefficient of the squared term: Divide each side by '-11'. 1.363636364 + -0.3636363636x + x2 = 0 Move the constant term to the right: Add '-1.363636364' to each side of the equation. 1.363636364 + -0.3636363636x + -1.363636364 + x2 = 0 + -1.363636364 Reorder the terms: 1.363636364 + -1.363636364 + -0.3636363636x + x2 = 0 + -1.363636364 Combine like terms: 1.363636364 + -1.363636364 = 0.000000000 0.000000000 + -0.3636363636x + x2 = 0 + -1.363636364 -0.3636363636x + x2 = 0 + -1.363636364 Combine like terms: 0 + -1.363636364 = -1.363636364 -0.3636363636x + x2 = -1.363636364 The x term is -0.3636363636x. Take half its coefficient (-0.1818181818). Square it (0.03305785123) and add it to both sides. Add '0.03305785123' to each side of the equation. -0.3636363636x + 0.03305785123 + x2 = -1.363636364 + 0.03305785123 Reorder the terms: 0.03305785123 + -0.3636363636x + x2 = -1.363636364 + 0.03305785123 Combine like terms: -1.363636364 + 0.03305785123 = -1.33057851277 0.03305785123 + -0.3636363636x + x2 = -1.33057851277 Factor a perfect square on the left side: (x + -0.1818181818)(x + -0.1818181818) = -1.33057851277 Can't calculate square root of the right side. The solution to this equation could not be determined.
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