bonjour
C = ( 8 x - 5 ) ( 3 x - 9 x - 7 )
C = ( 8 x - 5 ) ( - 6 x - 7 )
D = ( 6 x + 1 )²
E = ( 2 x - 3 )²
F = ( 8 - 3 x ) ( 8 + 3 x )
G = ( 2 x + 7 - 9 ) ( 2 x + 7 + 9 )
G = ( 2 x - 2 ) ( 2 x + 16 )
H = ( 5 - 3 x ) ( 9 x + 7 + 5 - 3 x )
H = ( 5 - 3 x ) ( 6 x + 12 )
