Tìm a,b,c phân biệt sao cho biểu thức sau nhận giá trị nguyên S= $\frac{(ab-1)(bc-1)(ca-1)}{abc}$ help me!
Question
Tìm a,b,c phân biệt sao cho biểu thức sau nhận giá trị nguyên
S= $\frac{(ab-1)(bc-1)(ca-1)}{abc}$
help me!
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