Data:K12n810/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 2 z^6-3 a^2 z^4-2 z^4}{a^2}+ $Failed^{-1} +9 z^4+a^4 z^2-9 a^2 z^2-6 z^2}{a^2}+ $Failed^{-1} +12 z^2+2 a^4-5 a^2-3}{a^2}+ $Failed^{-1} +1}{a^4}+ $Failed^{-1} +6}