①√72-√18/√8-(√3+1)(√3-1)②√27-√1/3+√12 化简,
问题描述:
①√72-√18/√8-(√3+1)(√3-1)②√27-√1/3+√12 化简,
答
①√72-√18/√8-(√3+1)(√3-1)
=6√2-3/2-(3-1)
=3√2-2
②√27-√1/3+√12
=3√3-1/3√3+2√3
=14/3√3