Data:K12n873/HOMFLYPT Polynomial

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle z^8-a^2 z^6-z^6}{a^2}+ $Failed^{-1} +5 z^6-4 a^2 z^4-4 z^4}{a^2}+ $Failed^{-1} +8 z^4+a^4 z^2-6 a^2 z^2-6 z^2}{a^2}+ $Failed^{-1} +z^2}{a^4}+ $Failed^{-1} +5 z^2+2 a^4-3 a^2-3}{a^2}+ $Failed^{-1} +2}{a^4}+ $Failed^{-1} +3}