计算:(7+4根号3)(2-根号3)^2+(2根号3)(2-根号3)-根号3
问题描述:
计算:(7+4根号3)(2-根号3)^2+(2根号3)(2-根号3)-根号3
答
(7+4根号3)(2-根号3)^2+(2根号3)(2-根号3)-根号3
=(7+4根号3)(7-4根号3)+(2根号3)(2-根号3)-根号3
=1+4根号3-6-根号3
=3根号3-5