无聊没事干了
1.√27/2+√3-2
=√3*√9/2+√3-2
=3√3/2+2√3/2-2
=(3+2)√3/2-2
=5√3/2-2
2.√12+(1/3)^-1-(-3)^0-|-√3|
=√4*√3+3-1-√3
=2√3-√3+3-1
=√3+2
3.√32-3√(1/2)+√2
=√16*√2-3√1/√2+√2
=4√2-3√2/2+√2
=8√2/2-3√2/2+2√2/2
=7√2/2
4.√2-√(2/3)
=√2-√6/3
=(3√2-√6)/3
或√2-2/√3
=√2-2√3/3
=(3√2-2√3)/3