约分:(1)2x^2y-2xy^2/x^2-2xy+y^2 (2)25-x^2/x^2-10x+25
问题描述:
约分:(1)2x^2y-2xy^2/x^2-2xy+y^2 (2)25-x^2/x^2-10x+25
答
2xy/(x-y)
(5+x)/(5-x)