Réponses

2013-05-16T19:27:17+02:00

J=(50-2x) (1/3+4x)

  = 50/3 + 200x - 2/3 x -6x²

  = -6x²- 50/3 + 600/3x - 2/3 x

   = -6x² 598/3 x - 50/3

2013-05-16T19:28:54+02:00

J= 50SUR3 +200x-2sur3x-8x²

j= +8x²+216x