3分之根号3减去根号3=-2√3/3
题目很含糊..Sqrt[3 - Sqrt[3]]/3 == Sqrt[3 - Sqrt[3]]/3(Sqrt[3] - Sqrt[3])/3 == 0Sqrt[3]/3 - Sqrt[3] == -(2/Sqrt[3])
负三分之二倍根号三
√3/3-√3=-(2/3)√3
=-(2/3)√3
