Bonjour,
J'espère ne pas m'être trompée sur l'énoncé car inzoomable !
1)
A = 3 (x + 5)
A = 3x + 15
B = 2x (4 - x)
B = 8x - 2x²
C = - 4 (7 + y)
C = - 28 - 4y
D = - 2 (3t - 1)
D = - 6t + 2
2)
A = 4a² + 3a
A = a (4a + 3)
B = 2t² + 4t
B = 2t (t + 2)
C = 25t - 5
C = 5 (5t - 1)
D = 18b - 24b
D = 6b (3 - 4)
