Réponses

2014-10-29T23:23:27+01:00
B=(x-2)(x+1)-x+2 
B = (x-2)(x+1) - 1(x - 2)
B = (x-2)(x+1-1)
B = x(x-2)

C = 
(x-3)²-x+3
C = (x-3)² - 1(x - 3)
C = (x-3)(x-3-1)
C = (x-3)(x-4)
Génie je te remercie j'ai compris ton explication