High number limit operation Lim {1 / (1-x) -- 1 / (1-x ^ 3)}, X tends to 1

High number limit operation Lim {1 / (1-x) -- 1 / (1-x ^ 3)}, X tends to 1

General division
lim[1/(1-x)--1/(1-x^3)]
=lim[(1+x +x²-1)/(1-x³)]
=lim[(x+x²))/(1-x³)]
=∞