bonjour
A (x ) = - 2 x² + 3 x - 2 x + 3 + 4 x - 10
A (x) = - 2 x² + 5 x - 7
B (x) = 4 x² + 4 x + 1 - 5 x + 2 x+ 2
B (x) = 4 x² + x + 3
C (x) = ( 3 x + 6 ) ( 2 x - 5 )
C (x) = 6 x² - 15 x + 12 x - 30
C (x) = 6 x² - 3 x - 30
D (x) = ( x - 2 ) ( 2 x - 3 + x + 5 )
D (x ) = ( x - 2 ) ( 3 x + 2 )
E (x) = ( 3 x - 1 ) ( 4 x + 2 - 3 x + 1 )
E (x) = ( 3 x - 1 ) ( x + 3 )