(x² +1)(y2 +1) +2(x - Y) (1 – Xy) = 4(1 + Xy) - 道道学堂问答

(x² +1)(y2 +1) +2(x - Y) (1 – Xy) = 4(1 + Xy)

匿名用户最后更新于 2021-12-01 19:16 数学类Mathematics

Find all positive integer solutions:

(x² +1)(y2 +1) +2(x - y) (1 – xy) = 4(1 + xy)

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