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Simplifying 4y2 + 3y + 9 = 0 Reorder the terms: 9 + 3y + 4y2 = 0 Solving 9 + 3y + 4y2 = 0 Solving for variable 'y'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 2.25 + 0.75y + y2 = 0 Move the constant term to the right: Add '-2.25' to each side of the equation. 2.25 + 0.75y + -2.25 + y2 = 0 + -2.25 Reorder the terms: 2.25 + -2.25 + 0.75y + y2 = 0 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + 0.75y + y2 = 0 + -2.25 0.75y + y2 = 0 + -2.25 Combine like terms: 0 + -2.25 = -2.25 0.75y + y2 = -2.25 The y term is 0.75y. Take half its coefficient (0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. 0.75y + 0.140625 + y2 = -2.25 + 0.140625 Reorder the terms: 0.140625 + 0.75y + y2 = -2.25 + 0.140625 Combine like terms: -2.25 + 0.140625 = -2.109375 0.140625 + 0.75y + y2 = -2.109375 Factor a perfect square on the left side: (y + 0.375)(y + 0.375) = -2.109375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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