Data:9 10/HOMFLYPT Polynomial

Failed to parse (syntax error): {\displaystyle z^4 a^{-4} +2 z^4 a^{-6} +z^4 a^{-8} +2 z^2 a^{-4} +5 z^2 a^{-6} +2 z^2 a^{-8} -z^2 a^{-10} }+2 a^{-6} + a^{-8} -2 a^{-10} }}