Tìm x, y $\epsilon R$ thỏa mãn $\frac{(x^{2}+1)(y^{2}+1)}{(x-1)(y-1)}=\frac{1}{2}(xy+1)$
Edited by misakichan, 31-10-2016 - 17:51.
Tìm x, y $\epsilon R$ thỏa mãn $\frac{(x^{2}+1)(y^{2}+1)}{(x-1)(y-1)}=\frac{1}{2}(xy+1)$
Started By misakichan, 31-10-2016 - 17:50
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