这道题目不会做,请各位学霸帮帮忙!谢谢各位了!

2025-05-07 22:30:16
推荐回答(2个)
回答1:

√xy+1/y√xy-1/x√xy+1/xy√y²+x²+2xy
=(1+1/y-1/x)√xy+1/xy(x+y)
=

回答2: