D = (2x - 1) - (x + 5) E = 3x + 1 - (5x – 3) F = 3x + 4 + (2x – 1) G = (2x - 7) + (x - 3) H = - (2x + 3) + (5x - 3) | = - (x + 7) - (2x – 6) J = 4 x (2a + 3) +

Réponse :

(2x - 1) - (x + 5)= x-6

E = 3x + 1 - (5x – 3)= 4-2x

F = 3x + 4 + (2x – 1)= 5x+3

G = (2x - 7) + (x - 3) =3x-10

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

| = - (x + 7) - (2x – 6)= -3x-1

J = 4 x (2a + 3) + 8= 8+12x+8ax

K= 9 (-5-2a) +18a= -45

L = 12 x (b + 2) + 9 x (2b-1)= 15(2bx +x)

M = 4 (3b+8) - 6 (2b + 7)= -10

N =2b (3b + 4) + 3b2= 4+9b

O = 8x (3x + 13) - 5x (7X+6)= 74x-11[tex]x^{2}[/tex]

Jesper avoir raison

Explications étape par étape:

D = x -6

E = 4 - 2x

F = 5x + 3

G = 3x - 3

H = 3x - 6

I = - 3x - 1

J = 8a + 20

K = -45

L = 30b + 15

M = -10

N = 6b carré + 8b + 3b2

O = 74x - 11x carré