bonsoir
A = ( 2 x + 3 ) ( - 4 x + 1 + 8 - x )
= ( 2 x + 3 ) ( - 5 x + 9 )
B = ( 4 - 5 x ) ( 8 x + 1 - 7 x + 5 )
= ( 4 - 5 x ) ( x + 6 )
