√18-2/√2+|1-√2|+(1/2)的负一次方
=3√2-√2+√2-1+2
=3√2+2
√8-√32+√9/2
=2√2-4√2+3/2√2
=-1/2√2
9√3+7√12-5√48+2√1/3
=9√3+14√3-20√3+2/3√3
=11/3√3
√18-2/√2+|1-√2|+(1/2)的负一次方
=3√2-√2+√2-1+2
=3√2+2
√8-√32+√9/2
=2√2-4√2+3/2√2
=-1/2√2
9√3+7√12-5√48+2√1/3
=9√3+14√3-20√3+2/3√3
=11/3√3