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