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Simplifying y2 + 8y + 55 = 0 Reorder the terms: 55 + 8y + y2 = 0 Solving 55 + 8y + y2 = 0 Solving for variable 'y'. Begin completing the square. Move the constant term to the right: Add '-55' to each side of the equation. 55 + 8y + -55 + y2 = 0 + -55 Reorder the terms: 55 + -55 + 8y + y2 = 0 + -55 Combine like terms: 55 + -55 = 0 0 + 8y + y2 = 0 + -55 8y + y2 = 0 + -55 Combine like terms: 0 + -55 = -55 8y + y2 = -55 The y term is 8y. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8y + 16 + y2 = -55 + 16 Reorder the terms: 16 + 8y + y2 = -55 + 16 Combine like terms: -55 + 16 = -39 16 + 8y + y2 = -39 Factor a perfect square on the left side: (y + 4)(y + 4) = -39 Can't calculate square root of the right side. The solution to this equation could not be determined.
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