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
1.6√2-3√2/2√2-3+1=6√2-11/2
2.3√3-√3/3+2√3=(14√3)/3
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