− a 4 z 10 + 2 a 6 z 8 − 5 a 4 z 8 + 2 a 2 z 8 − a 8 z 6 + 9 a 6 z 6 − 10 a 4 z 6 + 8 a 2 z 6 − z 6 − 4 a 8 z 4 + 14 a 6 z 4 − 13 a 4 z 4 + 10 a 2 z 4 − 3 z 4 − 4 a 8 z 2 + 12 a 6 z 2 − 11 a 4 z 2 + 7 a 2 z 2 − 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}+9a^{6}z^{6}-10a^{4}z^{6}+8a^{2}z^{6}-z^{6}-4a^{8}z^{4}+14a^{6}z^{4}-13a^{4}z^{4}+10a^{2}z^{4}-3z^{4}-4a^{8}z^{2}+12a^{6}z^{2}-11a^{4}z^{2}+7a^{2}z^{2}-2z^{2}-2a^{8}+5a^{6}-5a^{4}+3a^{2}}
