化简:(x-y)除以(根号x+根号y)-(x-2根号xy+y)除以(根号x-根号y)

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化简:(x-y)除以(根号x+根号y)-(x-2根号xy+y)除以(根号x-根号y)

化简:(x-y)除以(根号x+根号y)-(x-2根号xy+y)除以(根号x-根号y)
化简:(x-y)除以(根号x+根号y)-(x-2根号xy+y)除以(根号x-根号y)

化简:(x-y)除以(根号x+根号y)-(x-2根号xy+y)除以(根号x-根号y)
可知 x≥0,y≥0
(x-y)/(√x+√y) -(x -2√xy +y)/(√x -√y)
=(√x+√y)(√x-√y)/(√x+√y) -(√x-√y)²/(√x-√y)
=(√x-√y) -(√x-√y)
=0