（根号3-根号2）2次方+根号（2根号6-1）2次方
（根号3-根号2）2次方+根号（2根号6-1）2次方
数学人气：999 ℃时间：2019-10-24 06:19:34
优质解答
=3+2-2√6 +2√6-1=4
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