t 3 − 4 t 2 + 8 t − 9 + 8 t − 4 t 2 + 1 t 3 {\displaystyle t^{3}-4t^{2}+8t-9+{\frac {8}{t}}-{\frac {4}{t^{2}}}+{\frac {1}{t^{3}}}}
