化简:(x-y)⼀(√x-√y)-(x-2√xy+y)⼀(√x-√y)

2024-11-18 00:24:54
推荐回答(1个)
回答1:

(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)
=2√y