vous pouvez m'aide a factoriser ses expressions A=(2x+3)(2x-1)+(2x+3 )(x+1) B=(2x+3)(2x-1)+(x+2)(2x-1) C=(x+3)(x-1)-(x+3)(2x+3) D=(2x+6)(3-x)-(x+6)(3-x)

Bonjour,

A=(2x+3)(2x-1)+(2x+3 )(x+1)
A = (2x + 3) [(2x - 1) + (x + 1)]
A = (2x + 3) (2x - 1 + x + 1)
A = (2x + 3) (3x)

B=(2x+3)(2x-1)+(x+2)(2x-1)
B = (2x - 1) [(2x + 3) + (x + 2)]
B = (2x - 1) (2x + 3 + x + 2)
B = (2x - 1) (3x + 5)

C=(x+3)(x-1)-(x+3)(2x+3)
C = (x + 3) [(x - 1) - (2x + 3)]
C = (x + 3) (x - 1 - 2x - 3)
C = (x + 3) (- x - 4)

D=(2x+6)(3-x)-(x+6)(3-x)
D = (3 - x) [(2x + 6) - (x + 6))
D = (3 - x) (2x + 6 - x - 6)
D = (3 - x) (x)

bonjour

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

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

C=(x+3)(x-1)-(x+3)(2x+3)
(x+3)(x-1-2x-3)
(x+3)(-x-4)

D=(2x+6)(3-x)-(x+6)(3-x)
(3-x)(2x+6-x-6)
(3-x)(x)
x(3-x)