bonsoir aidez moi svp

II) Développer puis réduire :
A = 4 (x – 3)
B = 5 (3 x − 6)
C = 3 (4 x – 3)
D = 6 (2 x + 9)
E = 2 (4 x + 4 y − 3)
F = 3 x (2 x − 7)
G = 4 (2 x + 5) + 3 (x − 6)
H = 2 (3 x + 4 y – 2)
I = 2 x (x + 1) + x (5 x − 2)
J = 2 (3 x + 5) + 4 (2 x + 3)
K = 3 (2 x + 5) + 2 (4 x + 3)
L = 4 (2 x + 7) + 3 (x − 6)
M = 5 (3 x + 4) + 6 (2 x − 3)
N = (x – y) × x
O = 2 (4 a + 2 b) + 3 (6 a – b) + a (2 + b)
P = 4 (2 x + 3 y + 4) + 3 (5 x + 2 y − 5)
Q = 3 x (5 x + 3) + 6 x² + 2