bonjour
C = ( 10 x + 6 ) ( - 3 x +5 + 4 x - 1 )
C = ( 10 x + 6 ) ( x + 4 )
D = ( x - 2 ) ( x - 2 - 5 x + 1 )
D= ( x - 2 ) ( - 4 x - 1 )
E = ( 10 x + 3 ) ( 10 x + 3 - x - 1 )
E = ( 10 x + 3 ) ( 9 x + 2 )
F = ( x + 4 )² - ( x + 4 ) ( - 5 x - 9 )
F = ( x + 4 ) ( x + 4 + 5 x + 9 )
F = ( x + 4 ) ( 6 x + 13 )