计算;(1-2根号3)(2根号3+1)+(2根号3-1)²

问题描述:

计算;(1-2根号3)(2根号3+1)+(2根号3-1)²

(1-2根号3)(2根号3+1)+(2根号3-1)²
=1^2-(2√3)^2+(2√3)^2-4√3+1
=2-4√3