PUMaC 2007 · 数论(A 组) · 第 7 题
PUMaC 2007 — Number Theory (Division A) — Problem 7
题目详情
- How many ordered pairs of integers ( x, y ) satisfy 3 2 2 3 2 2 8( x + x y + xy + y ) = 15( x + y + xy + 1)? 2 2 x + y
解析
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Original Explanation
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