(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.(x+y)/(根号下x+根号下y)+2xy/_数学解答

(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.
(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.

人气：419 ℃　时间：2020-02-15 09:20:44

解答

结果为根号下x+根号下y
解2xy/(x根号下y+y根号下x）分母提公因式根号下xy 然后前后两式分母都含根号下x+根号下y
合并后约分得根号下x+根号下y