TPIDSDC15 := (1+14*k-14*m)*z+(-49+140*m+14*l-420*k)*z^2+(-1218*m-140*l+721+2562*k)*z^3+(1218*l-2569+1520*m-5756*k)*z^4+(4201-2382*m-1520*l+4442*k)*z^5+(-1801-724*m+2382*l-2976*k)*z^6+(724*l-1542*m+1929-698*k)*z^7+(1542*l+1119-1542*k-1116*m)*z^8+(-722*m+1329+1116*l-1116*k)*z^9+(722*l-320*m+919-722*k)*z^10+(521-320*k+320*l-102*m)*z^11+(-20*m+211+102*l-102*k)*z^12+(-2*m-20*k+20*l+61)*z^13+(11+2*l-2*k)*z^14+z^15:

TPIDSDC15:=expand(TPIDSDC15/z):

st:=time():
ANS:=resultant(TPIDSDC15,diff(TPIDSDC15,z),z):
time()-st;