Réponse :
Explications étape par étape
Bjr,
3(3x+5)
5x( x- 3x)
(x+1)( x+5 -4x ) = (x+1) ( 5-3x)
(5x+3)( 5x+3 +20x -10) = (5x+3) ( 25x -7)
3x+3 = 3(x+1) => (x+1) ( 3 +4x)
8x+4 = 4(2x+1) => (2x+1) (2x+1 +4) = (2x+1) ( 2x+5)
a) (x+8)²
b) (6x-1) (6x+1)
c) (5x -2)²
d) a² -b² = (a +b)(a-b) => (2x+1 +4x-3) ( 2x+1 -4x +3) = (6x -2) ( -2x +4)
e) (4x-7)(4x+7
f) (4x -3) ( 4x-3)
☺
