Réponses

2013-11-12T17:15:24+01:00
2(x-1)(2x+3)-(x+2)(x-4)
(2x-2)(2x+3)-(x+2)(x-4)
4x²+6x-4x-6-(x²-4x+2x-8)
4x²+6x-4x-6-x²+4x-2x+8
3x²+4x+2