a 2 z 10 − 3 a 4 z 8 + 5 a 2 z 8 − z 8 + 3 a 6 z 6 − 13 a 4 z 6 + 10 a 2 z 6 − 3 z 6 − a 8 z 4 + 11 a 6 z 4 − 21 a 4 z 4 + 9 a 2 z 4 − 2 z 4 − 3 a 8 z 2 + 15 a 6 z 2 − 15 a 4 z 2 + 4 a 2 z 2 + z 2 − 3 a 8 + 7 a 6 − 5 a 4 + a 2 + 1 {\displaystyle a^{2}z^{10}-3a^{4}z^{8}+5a^{2}z^{8}-z^{8}+3a^{6}z^{6}-13a^{4}z^{6}+10a^{2}z^{6}-3z^{6}-a^{8}z^{4}+11a^{6}z^{4}-21a^{4}z^{4}+9a^{2}z^{4}-2z^{4}-3a^{8}z^{2}+15a^{6}z^{2}-15a^{4}z^{2}+4a^{2}z^{2}+z^{2}-3a^{8}+7a^{6}-5a^{4}+a^{2}+1}
