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> 方程2(x+y)=xy+7的正整数解有()个.A.1B.2C.3D.4-数学
方程2(x+y)=xy+7的正整数解有()个.A.1B.2C.3D.4-数学
题目简介
方程2(x+y)=xy+7的正整数解有()个.A.1B.2C.3D.4-数学
题目详情
方程2(x+y)=xy+7的正整数解有( )个.
A.1
B.2
C.3
D.4
题型:单选题
难度:偏易
来源:不详
答案
B
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题目简介
方程2(x+y)=xy+7的正整数解有()个.A.1B.2C.3D.4-数学
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