bonjour
12 x² - 5 x = x ( 12 x - 5 =
E (x) = ( - x + 7 ) ( 3 x + 2 - x + 5 )
= ( - x + 7 ) ( 2 x + 7 )
12 x ( 5 x - 4 ) - ( 3 x - 2 ) ( 5 x - 4 )
= ( 5 x - 4 ) - [12 - ( 3 x - 2 ) ]
= ( 5 x - 4 ) ( 12 - 3 x + 2 )
= ( 5 x - 4 ) ( - 3 x + 14 )
g (x) = ( 2 x - 7 ) ( 2 x + 7 )