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