分式的通分和约分,1、9a+6ab+b^2/3a+62、x^2-36/2x+12这2个是通分1、x-y/2x+2y与xy/(x+y)^22、2mn/4m^2-9与2m-3/2m+3

分式的通分和约分,1、9a+6ab+b^2/3a+62、x^2-36/2x+12这2个是通分1、x-y/2x+2y与xy/(x+y)^22、2mn/4m^2-9与2m-3/2m+3
分式的通分和约分,
1、9a+6ab+b^2/3a+6
2、x^2-36/2x+12
这2个是通分
1、x-y/2x+2y与xy/(x+y)^2
2、2mn/4m^2-9与2m-3/2m+3

分式的通分和约分,1、9a+6ab+b^2/3a+62、x^2-36/2x+12这2个是通分1、x-y/2x+2y与xy/(x+y)^22、2mn/4m^2-9与2m-3/2m+3
问老师吧,这样比较可靠