(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)=______.
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(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)=______.
(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)=______.
(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)=______.
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
(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)=______.
(x*根号下x + x*根号下y ) / (xy-y^2) — (x + 根号下xy + y) /(x*根号下x — y*根号下y)
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