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Simplifying 9y2 + 68y + 160 = 0 Reorder the terms: 160 + 68y + 9y2 = 0 Solving 160 + 68y + 9y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 17.77777778 + 7.555555556y + y2 = 0 Move the constant term to the right: Add '-17.77777778' to each side of the equation. 17.77777778 + 7.555555556y + -17.77777778 + y2 = 0 + -17.77777778 Reorder the terms: 17.77777778 + -17.77777778 + 7.555555556y + y2 = 0 + -17.77777778 Combine like terms: 17.77777778 + -17.77777778 = 0.00000000 0.00000000 + 7.555555556y + y2 = 0 + -17.77777778 7.555555556y + y2 = 0 + -17.77777778 Combine like terms: 0 + -17.77777778 = -17.77777778 7.555555556y + y2 = -17.77777778 The y term is 7.555555556y. Take half its coefficient (3.777777778). Square it (14.27160494) and add it to both sides. Add '14.27160494' to each side of the equation. 7.555555556y + 14.27160494 + y2 = -17.77777778 + 14.27160494 Reorder the terms: 14.27160494 + 7.555555556y + y2 = -17.77777778 + 14.27160494 Combine like terms: -17.77777778 + 14.27160494 = -3.50617284 14.27160494 + 7.555555556y + y2 = -3.50617284 Factor a perfect square on the left side: (y + 3.777777778)(y + 3.777777778) = -3.50617284 Can't calculate square root of the right side. The solution to this equation could not be determined.
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