bonjour
A = 5 ( x + 2 )
B = ( x + 2 ) ( x + 5 + 9 ) = ( x + 2 ) ( x + 14 )
C = ( x + 2 ) ( 3 x + 4 + x - 3 ) = ( x + 2 ) ( 4 x + 3 )
D = ( x + 2 ) ( 8 x - 3 ) + 3 ( x + 2 ) = ( x + 2 ) ( 8 x - 3 + 3 ) = 8 x ( x + 2 )
E = ( x + 2 ) ( 2 x + 4 - x + 7 ) = ( x + 2 ) ( x + 11)
F = ( x + 2 ) ( 9 x - 5 ) - 8 ( x + 2 ) = ( x + 2 ) ( 9 x - 5 - 8 ) = ( x + 2 ) ( 9 x - 13 )
G = ( x+ 2 ) ( 2 x - 8 + 3 x + 24 ) = ( x + 2 ) ( 5 x + 16 )
H = ( x + 2 ) ( x + 8 + 1 ) = ( x + 2 ) ( x + 9 )