Réponses

  • Utilisateur Brainly
2013-07-12T19:28:46+02:00

(x²+x+1)(3x²-2x+5)

=3x^4+x^3+6x²+3x+5

 

(3x-2)(5x+3)(x-2)

=15x^3-31x²-4x+12