通分：（1）x/x²+2xy+y²与y/x+y (2）x+4/x²+4x与x-5/x(x-5)-2(x-5)快速回答会被采纳哦! 但是要正确的答案.

1 x/(x+y)^2 (y(x+y))/(x+y)^2
2 ((x+4)(x-5)(x-2))/((x(x+4)(x-2)(x-5)) (x(x-5)(X+4))/((x(x+4)(x-2)(x-5))

通分：（1）x/x²+2xy+y²与y/x+y x/x²+2xy+y²=x/(x+y)²y/x+y =[y(x+y)]/(x+y)²(2）x+4/x²+4x与x-5/x(x-5)-2(x-5)∵x+4/x²+4x=(x+4)/[x(x+4)]=1/xx-5/x(x-5)-2(x-5)=(x-5)/[(...