问题
解答题
(xy-x2)÷
|
答案
(xy-x2)÷
×x2-2xy+y2 xy x-y x2
=x(y-x)÷
×(x-y)2 xy x-y x2
=-x(x-y)×
×xy (x-y)2 x-y x2
=-y．
故答案为-y．
搜题请搜索小程序“爱下问搜题”
(xy-x2)÷
|
(xy-x2)÷
×x2-2xy+y2 xy x-y x2
=x(y-x)÷
×(x-y)2 xy x-y x2
=-x(x-y)×
×xy (x-y)2 x-y x2
=-y．
故答案为-y．