Réponses

2014-09-28T18:15:40+02:00
A=5X+2+6X+4=11X+6
B=-5X+3+4X-5=-x-2
C=-3X-4+8X-3=5X-7
D=5X²+3-8X²+2X-3 =-3X²+2X
E=6X²-3x+5-4X²-3X-4=2X²-6X+1