(X3-2x2y+xy2)÷（x3-xy2）要求约分
问题描述：
(X3-2x2y+xy2)÷（x3-xy2）要求约分
答
X3-2X2Y2+XY2/X3-(X3-2X2Y+XY2/X3-Y2)
答
(X3-2x2y+xy2)÷（x3-xy2）=(x2-2xy+y2)/(x2-y2)=(x-y)2/(x-y)(x+y)=(x-y)/(x+y)
答
=(x-y)÷(x+y)
答
(X2-2xy+y2)÷（x2-y2）=x-y/x+y
答
(X3-2x2y+xy2)÷（x3-xy2）
=x(x2-2xy+y2)/[x(x2-y2)]
=(x-y)2/[(x-y)(x+y)]
=(x-y)/(x+y)