:(1)(根号2)平方+(根号3平方)-(三次根号3)三次方=2+3-3=2 (2)|1-根号2|+|根号2-根号3|=(根号2-1)+(根号3-根号2)=根号2-1+根号3-根号2=根号3-1
(2)=根号2-1+根号3-根号2 =-1+根号3