Réponses

  • Utilisateur Brainly
2014-03-15T12:25:27+01:00
f(x)= (x-1)³-(x+1)(x-1)²-(x-1)(1-2x)
=(x-1)((x+1)(x-1)-1+2x)
=(x-1)(x²-1-1+2x)
=(x-1)(x²+2x-2)
=x³+2x²-2x-x²-2x+2
=x³+x²-4x+2
donc f est un polynôme de degré  3