2√12-6√(1/3)+3√48
=2×2√3-6×√[3/(3×3)]+3×4√3
=4√3-6×(√3/3)+12√3
=4√3-2√3+12√3
=14√3为什么6×√[3/(3×3)]=6×(√3/3)你好：分母有理化， 1/3=3/(3×3)√(1/3)=√(3/(3×3)=3分之根号3