Bonjour , pouvez vous m'aider? Pour demain SVP 1. Factoriser l'expression D = 2x(3x+1)-8x 2. Factoriser l'expression E=(4x-5)(2x+1)+(4x-5)(-3x+9) 3. Factoriser

Bonjour

1. Factoriser l'expression

D = 2x(3x+1)-8x

D = 6x² + 1 - 8x

D = 6x (x- 1)

2. Factoriser l'expression

E=(4x-5)(2x+1)+(4x-5)(-3x+9)

E = (4x - 5) (2x + 1 - 3x + 9)

E = (4x - 5) (- x + 10)

3. Factoriser l'expression

F = (-2x-3)(5x-1)-(-2x-3)²

F = (- 2x - 3) [(5x - 1) - (- 2x - 3)]

F = (- 2x - 3) (5x - 1 + 2x + 3)

F = (- 2x - 3) (7x + 2)

bonjour .

D = 2x ( 3 x + 1 ) - 8x = 2x ( 3x + 1 - 4 ) = 2x ( 3x - 3 ) = 2x * 3 ( x - 1 ) = 6x ( x - 1)

E=(4x-5)(2x+1)+(4x-5)(-3x+9)

= (4x-5) ( 2x + 1 - 3x + 9)

= (4x -5) ( 10-x)

F = (-2x-3)(5x-1)-(-2x-3)²

=( -2x - 3 ) ( 2x + 3 + 5x - 1)

= (-2x - 3 ) ( 7x + 2 )

bonne journée ☺️