Réponses

  • Utilisateur Brainly
2013-11-03T12:10:33+01:00
A= 5x(2x-3)+3(4x-1)
=10x²-15x+12x-3
=10x²-3x-3

B= ( 5x-1) (x-3)-4x(1-x)

=5x²-x-15x+3-4x+4x²
=9x²-20x+3