a 2 z 10 − 2 a 4 z 8 + 7 a 2 z 8 − z 8 + a 6 z 6 − 11 a 4 z 6 + 20 a 2 z 6 − 5 z 6 + 4 a 6 z 4 − 22 a 4 z 4 + 28 a 2 z 4 − 9 z 4 + 5 a 6 z 2 − 18 a 4 z 2 + 18 a 2 z 2 − 6 z 2 + 2 a 6 − 5 a 4 + 4 a 2 {\displaystyle a^{2}z^{10}-2a^{4}z^{8}+7a^{2}z^{8}-z^{8}+a^{6}z^{6}-11a^{4}z^{6}+20a^{2}z^{6}-5z^{6}+4a^{6}z^{4}-22a^{4}z^{4}+28a^{2}z^{4}-9z^{4}+5a^{6}z^{2}-18a^{4}z^{2}+18a^{2}z^{2}-6z^{2}+2a^{6}-5a^{4}+4a^{2}}
