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Simplifying y2 + 2Y + -81 = 0 Reorder the terms: -81 + 2Y + y2 = 0 Solving -81 + 2Y + y2 = 0 Solving for variable 'Y'. Move all terms containing Y to the left, all other terms to the right. Add '81' to each side of the equation. -81 + 2Y + 81 + y2 = 0 + 81 Reorder the terms: -81 + 81 + 2Y + y2 = 0 + 81 Combine like terms: -81 + 81 = 0 0 + 2Y + y2 = 0 + 81 2Y + y2 = 0 + 81 Combine like terms: 0 + 81 = 81 2Y + y2 = 81 Add '-1y2' to each side of the equation. 2Y + y2 + -1y2 = 81 + -1y2 Combine like terms: y2 + -1y2 = 0 2Y + 0 = 81 + -1y2 2Y = 81 + -1y2 Divide each side by '2'. Y = 40.5 + -0.5y2 Simplifying Y = 40.5 + -0.5y2
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