Réponses

2013-11-17T14:42:38+01:00
F(x)= (x-1) ((x-1)2* -(x+1)(x-1)-(1-2x))
    = (x-1) ( x2* -1 -x2*-1-1+2x)
     = (x-1) (-3+2x)
( *=puissance)