Réponses

  • Utilisateur Brainly
2013-11-21T18:31:14+01:00
A= 5x - 4 + 7x - 8x + 6
=4x+2

B= -4y + 5 - 2y² + y - 8y² - 3y - 11
=-10y²-7y-6

C= -3x + 5 - 7x + 2x - 6x - 6

=-14x-1
2013-11-21T20:14:01+01:00
A =5x+7x-8x-4+6= 4x+2
B = -2ycarre-8ycarre-4y-3y+y+5-11=-10ycarre-6y-6
C = -3x-7x+2x-6x+5-6 = -14x-1