Salut !
Recopier et factoriser les expressions suivantes.
C = ( 1 - 2x ) ( 4x - 25 ) - ( 2x - 53 - 2x ) ( 1 - 2x )
C = ( 1 - 2x ) [ ( 4x - 25 ) - ( 2x - 53 - 2x ) ]
C = ( 1 - 2x ) ( 4x - 25 - 2x + 53 + 2x )
C = ( 1 - 2x ) ( 4x - 77 ) ✅
D = ( x + 1 )² - 9 + 5 ( x + 4 )
D = ( x + 1 ) ( x + 1 ) - 3² + 5 ( x + 4 )
D = [ ( x + 1 ) + 3 ] [ ( x + 1 ) - 3 ] + 5 ( x + 4 )
D = ( x + 1 + 3 ) ( x + 1 - 3 ) + 5 ( x + 4 )
D = ( x + 4 ) ( x - 2 ) + 5 ( x + 4 )
D = ( x + 4 ) [ ( x - 2 ) + 5 ]
D = ( x + 4 ) ( x - 2 + 5 )
D = ( x + 4 ) ( x + 3 ) ✅
J'espère t'avoir aidé(e).
