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Simplifying 2y2 + -5y + 5 = 0 Reorder the terms: 5 + -5y + 2y2 = 0 Solving 5 + -5y + 2y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 2.5 + -2.5y + y2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + -2.5y + -2.5 + y2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + -2.5y + y2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + -2.5y + y2 = 0 + -2.5 -2.5y + y2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 -2.5y + y2 = -2.5 The y term is -2.5y. Take half its coefficient (-1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. -2.5y + 1.5625 + y2 = -2.5 + 1.5625 Reorder the terms: 1.5625 + -2.5y + y2 = -2.5 + 1.5625 Combine like terms: -2.5 + 1.5625 = -0.9375 1.5625 + -2.5y + y2 = -0.9375 Factor a perfect square on the left side: (y + -1.25)(y + -1.25) = -0.9375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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