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Simplifying y2 + 2x + -4y + 4 = 0 Reorder the terms: 4 + 2x + -4y + y2 = 0 Solving 4 + 2x + -4y + y2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + 2x + -4y + -4 + y2 = 0 + -4 Reorder the terms: 4 + -4 + 2x + -4y + y2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 2x + -4y + y2 = 0 + -4 2x + -4y + y2 = 0 + -4 Combine like terms: 0 + -4 = -4 2x + -4y + y2 = -4 Add '4y' to each side of the equation. 2x + -4y + 4y + y2 = -4 + 4y Combine like terms: -4y + 4y = 0 2x + 0 + y2 = -4 + 4y 2x + y2 = -4 + 4y Add '-1y2' to each side of the equation. 2x + y2 + -1y2 = -4 + 4y + -1y2 Combine like terms: y2 + -1y2 = 0 2x + 0 = -4 + 4y + -1y2 2x = -4 + 4y + -1y2 Divide each side by '2'. x = -2 + 2y + -0.5y2 Simplifying x = -2 + 2y + -0.5y2
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