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