設x,y爲正實數,且xy-(x+y)=1,則 （ ）A.x+y2+2 B.xy+1 C.x+... 問題詳情：設x,y爲正實數,且xy-(x+y)=1,則 （ ）A.x+y2+2 B.xy+1 C.x+y(+1)2 D.xy2+2【回答】A知識點：不等式題型：選擇題...
