4. Efectuați P(X):Q(X), dacă: a) P(X)= X - 3X² +X-9, Q(X)= X²3; b) P(X)=2X - X² +4, Q(X)= X – X; c) P(X)=-5X +X² – X +4, Q(X)= X³ +1; d) P(X)= X – X³+X, Q(X)= X² -1; e) P(X)=2X³ + X² +5X +60, Q(X)= X+3.​