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HIENLULI
2 năm trước
Cho a,b,c là các số thực khác 0, thỏa mãn: `a + b - 2017c/c` = `b + c - 2017a/a` = `c + a - 2017b/b` Hãy tính giá trị của biểu thức: B= (1 + `b/a`).(1 + `a/c`).(1+ `c/b`)
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