根号2-1的平方 2倍的根号3减根号2乘以根号6 2

问题描述:

根号2-1的平方 2倍的根号3减根号2乘以根号6 2
(√2-1)²+2(√3-√2)(√6+2)

(√2-1)²+2(√3-√2)(√6+2)
=(√2-1)²+√2(√6-2)(√6+2)
=(√2-1)²+√2(6-4)
=3-2√2+2√2
=3