3根号2 -1/2根号3 +1/3根号2 -根号2 +根号3
=3√2-√3/2+√2/3-√2+√3
=3√2+√2/3-√2+√3-√3/2
=(3√2+√2/3-√2)+(√3-√3/2)
=7√2/3+√3/2.