bonjour
F = ( 7 x - 2 ) ( x - 9 ) + 2 ( 7 x - 2 )
F = ( 7 x - 2 ) ( x - 9 + 2 )
f = ( 7 x - 2 ) ( x - 7 )
G = ( x + 4 )² + ( x - 4 ) ( x + 4 ) + 2 ( x + 4 )
G = ( x + 4 ) ( x + 4 + x - 4 + 2 )
G = ( x + 4 ) ( 2 x + 2 )
G = 2 ( x + 4 ) ( x + 1 )
H = ( 2 x + 6 ) ( x - 5 ) + 3 ( x + 3 )
H = 2 ( x + 3 ) ( x - 5 ) + 3 ( x + 3 )
H = ( x + 3 ) ( 2 x - 10 + 3 )
H = ( x + 3 ) ( 2 x - 7 )
