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Simplifying 2y2 + y + 4 = 0 Reorder the terms: 4 + y + 2y2 = 0 Solving 4 + y + 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 + 0.5y + y2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + 0.5y + -2 + y2 = 0 + -2 Reorder the terms: 2 + -2 + 0.5y + y2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 0.5y + y2 = 0 + -2 0.5y + y2 = 0 + -2 Combine like terms: 0 + -2 = -2 0.5y + y2 = -2 The y term is y. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.5y + 0.25 + y2 = -2 + 0.25 Reorder the terms: 0.25 + 0.5y + y2 = -2 + 0.25 Combine like terms: -2 + 0.25 = -1.75 0.25 + 0.5y + y2 = -1.75 Factor a perfect square on the left side: (y + 0.5)(y + 0.5) = -1.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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