Aider moi svp!!!!!!!!

Réponse:

Exercice 1:

A= 4x +36

A= 4(x + 9)

B= 5x² -10x

B= 5(x² - 2x)

C= 2x(x-3) + (-2x+1)(x-3)

C= (x-3)(2x -2x +1)

C= (x-3) × 1

C= x-3

D= (5x+2)² -(5x+2)(x-1)

D= (5x+2)(5x+2) -(5x+2)(x-1)

D= (5x+2)(5x+2 -x+1)

D= (5x+2)(4x+3)

E= (3x+3) -(3x+3)(x-7)

E= (3x+3)(1 -x+7)

E= (3x+3)(8-x)

Exercice 2 :

1)

F= 3x(2x-1)-(2x-1)²

F= 3x(2x-1) -(2x-1)(2x-1)

F= (2x-1)(3x -2x+1)

F= (2x-1)(x+1)

2)

F= 3x(2x-1)-(2x-1)²

F= 6x² -3x -((2x)² - 2×2x×1 + 1²)

F= 6x² -3x -(4x² -4x +1)

F= 6x² -3x -4x² +4x -1

F= 6x² -4x² -3x+4x -1

F= 2x² +x -1

3)

F= 3×(-2)×(2×(-2)-1)-(2×(-2)-1)²

F= 3×(-2)×(-4-1)-(-4-1)²

F= 3×(-2)×(-5)-(-5)²

F= 30 - 25

F= 5