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Simplifying y + 9 + y2 = 4 Reorder the terms: 9 + y + y2 = 4 Solving 9 + y + y2 = 4 Solving for variable 'y'. Reorder the terms: 9 + -4 + y + y2 = 4 + -4 Combine like terms: 9 + -4 = 5 5 + y + y2 = 4 + -4 Combine like terms: 4 + -4 = 0 5 + y + y2 = 0 Begin completing the square. Move the constant term to the right: Add '-5' to each side of the equation. 5 + y + -5 + y2 = 0 + -5 Reorder the terms: 5 + -5 + y + y2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + y + y2 = 0 + -5 y + y2 = 0 + -5 Combine like terms: 0 + -5 = -5 y + y2 = -5 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. y + 0.25 + y2 = -5 + 0.25 Reorder the terms: 0.25 + y + y2 = -5 + 0.25 Combine like terms: -5 + 0.25 = -4.75 0.25 + y + y2 = -4.75 Factor a perfect square on the left side: (y + 0.5)(y + 0.5) = -4.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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