Bonjour pouvez vous m'aider svp

Factoriser chaque expression

30 A= -7x(x + 2) - (7 + x)(x + 2);

B = -9x(4x - 5) - (4x - 5) (1 - 2x);

C= 5(2x + 3) - (3x-8)(2x + 3):

D= (1 - 2x)(9x - 1) - (9x - 1)(7 + 3x).

Factoriser chaque expression

31 A=(x + 4)(x - 6) + (-1 + x)(x - 6);

b B = (7x - 4)(x + 4) + (7x - 4)(7x - 1);

c C=(x + 1)(5x - 6) - (5x-6)(-1 + 4x):

d D = (3x + 8)(x + 4) - (x - 1) (3x + 8).​