(12,20)→ ¬X; 20

Toán BÁO CÁO TOÁN HỌC FANS AND BUNDLES IN THE GRAPH OF PAIRWISE SUMS AND PRODUCT POTX

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Đáp án tham khảo

20: (12,20)→ ¬x; 20: (20,19)→ ¬y; 48: (19,48)→ ¬y; 84: (19,84)→ ¬y;