Réponse:
Exercice 32 :
A= x^2+3x+4x+12
A= x^2+7x+12
B= 2y^2+8y+6y+24
B= 2y^2+14y+24
C= 15z+18z^2+20+24z
C= 18z^2+39z+20
D= 21t+35t^2+24+40t
D= 35t^2+61t+24
