Réponses

2014-10-09T18:09:10+02:00
(x+1)² + 3(x+1) = (x+1)(x+1) + 3(x+1) = (x+1)(x+1+3) = (x+1)(x+4)
2014-10-09T18:11:35+02:00
Voila le resultat 3 ( x + 1 )
(x+1)(x+1)+3(x+1)=(x+1)(x+1)(x+1)+3=(x+1)•2+3
•2 est égale au cube