D) (5m-4s)³=(5m)³-3*(5m)²*4s+3*5m*(4s)²-(4s)³=
=125m³-300m²s+240ms²-64s³
e) (3c-2t)³=(3c)³-3*(3c)²*2t+3*3c*(2t)²-(2t)³=
=27c³-54c²t+36ct²-8t³
g) (7d-3e)³=(7d)³-3*(7d)²*3e+3*7d*(3e)²-(3e)³=
=343d³-441d²e+189de²-27e³
z) (6v-2a)³=(6v)³-3*(6v)²*2a+3*6v*(2a)²-(2a)³=
=216v³-216v²a+72va²-8a³