Réponses

Meilleure réponse !
2013-12-31T17:00:26+01:00
1) A= (3x + 2) (5x - 7) - (5x - 1) x
=15x²-21x+10x-14-5x²+x
=10x²-11x-14
2013-12-31T17:46:57+01:00
(3x + 2) (5x - 7) - (5x - 1) x 15x²-21x+10x-14-5x²+10x²-11x-14