z 2 a 10 + a 10 − z 4 a 8 − z 2 a 8 − 2 z 4 a 6 − 5 z 2 a 6 − 4 a 6 + 3 z 2 a 4 + 3 a 4 + z 2 a 2 + a 2 {\displaystyle z^{2}a^{10}+a^{10}-z^{4}a^{8}-z^{2}a^{8}-2z^{4}a^{6}-5z^{2}a^{6}-4a^{6}+3z^{2}a^{4}+3a^{4}+z^{2}a^{2}+a^{2}}
