a 3 z 5 + a z 5 + a 4 z 4 + 2 a 2 z 4 + z 4 − 3 a 3 z 3 − 2 a z 3 + z 3 a − 3 a 4 z 2 − 4 a 2 z 2 + z 2 a 2 + 2 a 3 z + 2 a z + a 4 + a 2 − 1 a 2 {\displaystyle a^{3}z^{5}+az^{5}+a^{4}z^{4}+2a^{2}z^{4}+z^{4}-3a^{3}z^{3}-2az^{3}+{\frac {z^{3}}{a}}-3a^{4}z^{2}-4a^{2}z^{2}+{\frac {z^{2}}{a^{2}}}+2a^{3}z+2az+a^{4}+a^{2}-{\frac {1}{a^{2}}}}
