%%HP: T(3)A(D)F(.);
'XROOT(3,(-((27*A^2*D-9*A*B*C+2*B^3)/(27*A^3))-\v/(((27*A^2*D-9*A*B*C+2*B^3)/(27*A^3))^2+4*(((3*A*C-B^2)/(3*A^2))^3/27)))/2)-(3*A*C-B^2)/(3*A^2)/(3*XROOT(3,(-((27*A^2*D-9*A*B*C+2*B^3)/(27*A^3))-\v/(((27*A^2*D-9*A*B*C+2*B^3)/(27*A^3))^2+4*(((3*A*C-B^2)/(3*A^2))^3/27)))/2))-B/(3*A)'