bonjour besoins d aide svp Exercice 1
Développer et réduire :
A= (2x – 1)2 + (7x – 3) (2x + 4);
C = (3-5x)2 + (7x – 4)2;

Exercice 2
Factoriser:
A = 4x2 – 5x ;
C = (5x – 2) (7 + 3x) - (5x – 2) (2x - 4)
E = (3x - 5)2 – (2x + 7)2;
G = 49 - 4x2 ;​