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60x⁴ - 240x³ + 72x² y² + 345x² - 80x y² - 210x + 12y⁴ + 57y² + 45=0
60x⁴ - 240x³ + 72x² y² + 345x² - 80x y² - 210x + 12y⁴ + 57y² + 45=0
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