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Simplifying y2 + -8y + 215 = 0 Reorder the terms: 215 + -8y + y2 = 0 Solving 215 + -8y + y2 = 0 Solving for variable 'y'. Begin completing the square. Move the constant term to the right: Add '-215' to each side of the equation. 215 + -8y + -215 + y2 = 0 + -215 Reorder the terms: 215 + -215 + -8y + y2 = 0 + -215 Combine like terms: 215 + -215 = 0 0 + -8y + y2 = 0 + -215 -8y + y2 = 0 + -215 Combine like terms: 0 + -215 = -215 -8y + y2 = -215 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 = -215 + 16 Reorder the terms: 16 + -8y + y2 = -215 + 16 Combine like terms: -215 + 16 = -199 16 + -8y + y2 = -199 Factor a perfect square on the left side: (y + -4)(y + -4) = -199 Can't calculate square root of the right side. The solution to this equation could not be determined.
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