− a 4 z 10 + 2 a 6 z 8 − 5 a 4 z 8 + 2 a 2 z 8 − a 8 z 6 + 8 a 6 z 6 − 12 a 4 z 6 + 7 a 2 z 6 − z 6 − 3 a 8 z 4 + 13 a 6 z 4 − 18 a 4 z 4 + 8 a 2 z 4 − 2 z 4 − 3 a 8 z 2 + 13 a 6 z 2 − 14 a 4 z 2 + 6 a 2 z 2 − 2 a 8 + 5 a 6 − 5 a 4 + 3 a 2 {\displaystyle -a^{4}z^{10}+2a^{6}z^{8}-5a^{4}z^{8}+2a^{2}z^{8}-a^{8}z^{6}+8a^{6}z^{6}-12a^{4}z^{6}+7a^{2}z^{6}-z^{6}-3a^{8}z^{4}+13a^{6}z^{4}-18a^{4}z^{4}+8a^{2}z^{4}-2z^{4}-3a^{8}z^{2}+13a^{6}z^{2}-14a^{4}z^{2}+6a^{2}z^{2}-2a^{8}+5a^{6}-5a^{4}+3a^{2}}
