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Simplifying -7y2 + 13y + -132 = 0 Reorder the terms: -132 + 13y + -7y2 = 0 Solving -132 + 13y + -7y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by -7 the coefficient of the squared term: Divide each side by '-7'. 18.85714286 + -1.857142857y + y2 = 0 Move the constant term to the right: Add '-18.85714286' to each side of the equation. 18.85714286 + -1.857142857y + -18.85714286 + y2 = 0 + -18.85714286 Reorder the terms: 18.85714286 + -18.85714286 + -1.857142857y + y2 = 0 + -18.85714286 Combine like terms: 18.85714286 + -18.85714286 = 0.00000000 0.00000000 + -1.857142857y + y2 = 0 + -18.85714286 -1.857142857y + y2 = 0 + -18.85714286 Combine like terms: 0 + -18.85714286 = -18.85714286 -1.857142857y + y2 = -18.85714286 The y term is -1.857142857y. Take half its coefficient (-0.9285714285). Square it (0.8622448978) and add it to both sides. Add '0.8622448978' to each side of the equation. -1.857142857y + 0.8622448978 + y2 = -18.85714286 + 0.8622448978 Reorder the terms: 0.8622448978 + -1.857142857y + y2 = -18.85714286 + 0.8622448978 Combine like terms: -18.85714286 + 0.8622448978 = -17.9948979622 0.8622448978 + -1.857142857y + y2 = -17.9948979622 Factor a perfect square on the left side: (y + -0.9285714285)(y + -0.9285714285) = -17.9948979622 Can't calculate square root of the right side. The solution to this equation could not be determined.
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