Réponses

2013-12-15T12:23:04+01:00
1- (6x-8+2x-3)(6x-8-2x+3)
    (8x-11)(4x-5)
2-(5x-8)(5x-8+1)
   (5x-8)(5x-7)
3-(2x+5)²-9²
   (2x+5-9)(2x+5+9)
   (2x-4)(2x+14)