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Simplifying 9y2 + -66y + 133 = 0 Reorder the terms: 133 + -66y + 9y2 = 0 Solving 133 + -66y + 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'. 14.77777778 + -7.333333333y + y2 = 0 Move the constant term to the right: Add '-14.77777778' to each side of the equation. 14.77777778 + -7.333333333y + -14.77777778 + y2 = 0 + -14.77777778 Reorder the terms: 14.77777778 + -14.77777778 + -7.333333333y + y2 = 0 + -14.77777778 Combine like terms: 14.77777778 + -14.77777778 = 0.00000000 0.00000000 + -7.333333333y + y2 = 0 + -14.77777778 -7.333333333y + y2 = 0 + -14.77777778 Combine like terms: 0 + -14.77777778 = -14.77777778 -7.333333333y + y2 = -14.77777778 The y term is -7.333333333y. Take half its coefficient (-3.666666667). Square it (13.44444445) and add it to both sides. Add '13.44444445' to each side of the equation. -7.333333333y + 13.44444445 + y2 = -14.77777778 + 13.44444445 Reorder the terms: 13.44444445 + -7.333333333y + y2 = -14.77777778 + 13.44444445 Combine like terms: -14.77777778 + 13.44444445 = -1.33333333 13.44444445 + -7.333333333y + y2 = -1.33333333 Factor a perfect square on the left side: (y + -3.666666667)(y + -3.666666667) = -1.33333333 Can't calculate square root of the right side. The solution to this equation could not be determined.
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