z 6 a 6 + z 6 a 8 + z 5 a 7 + z 5 a 9 − 6 z 4 a 6 − 6 z 4 a 8 − 5 z 3 a 7 − 5 z 3 a 9 + 10 z 2 a 6 + 10 z 2 a 8 + 5 z a 7 + 5 z a 9 − 5 a 6 − 5 a 8 − 1 a 10 {\displaystyle {\frac {z^{6}}{a^{6}}}+{\frac {z^{6}}{a^{8}}}+{\frac {z^{5}}{a^{7}}}+{\frac {z^{5}}{a^{9}}}-{\frac {6z^{4}}{a^{6}}}-{\frac {6z^{4}}{a^{8}}}-{\frac {5z^{3}}{a^{7}}}-{\frac {5z^{3}}{a^{9}}}+{\frac {10z^{2}}{a^{6}}}+{\frac {10z^{2}}{a^{8}}}+{\frac {5z}{a^{7}}}+{\frac {5z}{a^{9}}}-{\frac {5}{a^{6}}}-{\frac {5}{a^{8}}}-{\frac {1}{a^{10}}}}
