(7+4*根号3)(7-4*号3)+(2+根号6)/(2+根号3)怎样计算?

问题描述:

(7+4*根号3)(7-4*号3)+(2+根号6)/(2+根号3)怎样计算?

(7+4*根号3)(7-4*号3)+(2+根号6)/(2+根号3)=7^2-(4*根号3)^2+(2+根号6)(2-根号3)=49-48+4- 2根号3+2根号6-3根号2=5-2根号3+2根号6-3根号2