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2 năm trước
cho A = 6/n-3 a.Tìm điều kiện khiến n để a là phân số b. Tìm phân số A với n = 0 , n=1 , n=-10 2. Tìm số tự nhiên để : M=n+4/n là số nguyên 3. Lặp các cặp phân số bằng nhau tử 4 trong 2;4;8;16;32
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