Réponses

2012-11-05T21:50:35+01:00
2012-11-05T22:08:57+01:00

A= (3x+4)(x+2)+(5x+1)(x-2)

8xcarré+x-2

B= (2x+5)(-x+2)-(x-3)(-3x+4)

5xcarré-14x+2

bonne chance