2根号12减4根号27分支1+3根号48=4根号3-(1+12根号3)/12根号3=4根号3-1-1/12根号3=143根号3/3-1
=4根号3 -12根号3 分之1 +12根号3=-8根号3 乘根号3 分之(1+12根号3)乘根号3=-24分之根号3 +36
2根号12=4根号34根号27=12根号33根号48=12根号34根号3-12根号3+12根号3=4根号3
=4根3-4/根27+12根3=4根3-12根3/27+12根3=140根3/9