(21,80)→ ¬Z; 84

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

80: (21,80)→ ¬z; 84 : (19,84)→ ¬z; 84: (20,84)→ ¬y; 44: (44,84) → ¬x;