Bonjour,
Exercice1
15x-3
3x² +5x -7
-3x² +4x +12
Exercice 2
12x +48
35x -7
-4x² +36x
6x² +9x +8x +12 = 6x² +17x +12
35x² -21x +25x -15 = 35x² +4x -15
14x² -2x +63x -9 = 14x² +61x -9
Exercice 3
x² +4x +3x +12 = x² +7x +12
x² +6x -3x -18 = x² +3x -18
x² -5x -5x +5 = x² -10x +5
