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Simplifying 11x2 + 4x + 18 = 0 Reorder the terms: 18 + 4x + 11x2 = 0 Solving 18 + 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'. 1.636363636 + 0.3636363636x + x2 = 0 Move the constant term to the right: Add '-1.636363636' to each side of the equation. 1.636363636 + 0.3636363636x + -1.636363636 + x2 = 0 + -1.636363636 Reorder the terms: 1.636363636 + -1.636363636 + 0.3636363636x + x2 = 0 + -1.636363636 Combine like terms: 1.636363636 + -1.636363636 = 0.000000000 0.000000000 + 0.3636363636x + x2 = 0 + -1.636363636 0.3636363636x + x2 = 0 + -1.636363636 Combine like terms: 0 + -1.636363636 = -1.636363636 0.3636363636x + x2 = -1.636363636 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 = -1.636363636 + 0.03305785123 Reorder the terms: 0.03305785123 + 0.3636363636x + x2 = -1.636363636 + 0.03305785123 Combine like terms: -1.636363636 + 0.03305785123 = -1.60330578477 0.03305785123 + 0.3636363636x + x2 = -1.60330578477 Factor a perfect square on the left side: (x + 0.1818181818)(x + 0.1818181818) = -1.60330578477 Can't calculate square root of the right side. The solution to this equation could not be determined.
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