A = (x + 1)(3-x) + (x + 1)(2 + 5x)
B = (x + 2)(x + 1) + (x + 2)(7x - 5)
C = (x + 3)(3-2x) - (x + 3)(5 + x)
D = (2x + 1)(x - 5) - (3x + 1)(2x + 1)
Bonjour aidez moi svpp il faut factoriser ses expressions !!