首先对括号内的数进行开方化简,得到(5根号2-2根号2)/根号2=3根号2/根号2=3
(√50-√8)÷√2=(5√2-2√2)÷√2=3
(√50-√8)÷√2=﹙5√2-2√2﹚÷√2=3
=5-2=3
3