计算:(1)根号3*根号6-根号2*根号6 (2)2(根号2+根号3)-3(根号2-根号27)急!(3)(根号3-根号5)² (4)(根号3+1)(根号3-2)

问题描述:

计算:(1)根号3*根号6-根号2*根号6 (2)2(根号2+根号3)-3(根号2-根号27)急!
(3)(根号3-根号5)² (4)(根号3+1)(根号3-2)