Réponses

  • Utilisateur Brainly
2014-03-23T18:45:08+01:00
Exercice 28:

A= 4x +4
A= 4 (x+1)

B= 8x -8
B= 8 (x-1)

C= 4 +2x
C= 2*2 + 2x
C= 2 (2+x)

D= 2x -8
D= 2x -4*2
D= 2 (x-4)

E= 9x² -5x
E= 9*x*x -5x
E= x (9x-5)

F= 6x +9
F= 2*3x + 3*3
F= 3 (2x +3)

Voilà ! J'espère t'avoir aidé(e) ! :)
2014-03-23T18:46:54+01:00
Exercice 28:

a) 4x + 4
= 4 (x + 1)

b) 8x - 8
= 8 (x - 1)

c) 4 + 2x
= 2 (2 + x)

d) 2x - 8
= 2 (x - 4)

e) 9x² - 5x
= x (9x - 5)

f) 6x + 9
= 3 (2x + 3)