Réponses

2014-01-24T07:23:36+01:00


(3X-3)(-2X+8)-7(-2X+8) = (-2x+8)((3x-3-7) = (-2x+8) (3x-10)
2014-01-24T08:06:04+01:00
(3x - 3) (-2x + 8) - 7 (-2x + 8)
= (3x - 3 - 7) (-2 + 8)
= (3x - 10) (-2x + 8)