Répondre :
bonjour
A = 2 ( 2 a - 5 b )
B = 2 x ( 2 + 3 x )
C = x ( 2 x + 1 )
D = 11 ( a + 2 b )
E = - 3 ( a - 4 b )
F = - x ( 5 x - 6 )
G = 2 ( 2 a + 9 b )
H = 5 x ( - 7 - 9 x )
bonjour
A = 2 ( 2 a - 5 b )
B = 2 x ( 2 + 3 x )
C = x ( 2 x + 1 )
D = 11 ( a + 2 b )
E = - 3 ( a - 4 b )
F = - x ( 5 x - 6 )
G = 2 ( 2 a + 9 b )
H = 5 x ( - 7 - 9 x )