分母是x开三次方吧?lim (1-x³)/[x^(1/3)-1]分子：1-x³=(1-x)(1+x+x²)然后分子分母同乘以[x^(2/3)+x^(1/3)+1]此时分子变成：(1-x)(1+x+x²)[x^(2/3)+x^(1/3)+1]分母变成：[x^(1/3)-1][x^(2/3)+x^(...