Réponses

2014-04-07T18:31:26+02:00
70.
A 7+5x+21x+15x2
15x+26x+7

B 12x+6x2+14+7x
6x2+19x+14

C 4x+5+12x2+15x
12x2+19x+5

D 100x+90x2+90+81
90x2+181x+90

71

A 3y-15y2 +5-25y
-15y2 -22y+5

B -18+6x+3x-x2
-x2+9x-18

C -8a2+16a-5a-10
-8a2-21a -10

D. -50x +25x2+20-10x
25x2-60x+20

2014-04-07T18:35:52+02:00

je te donne la solution du 71 le 70 je n'arrive pas
3y-15y2 +5-25y
-15y2 -22y+5

B -18+6x+3x-x2
-x2+9x-18

C -8a2+16a-5a-10
-8a2-21a -10

D. -50x +25x2+20-10x
25x2-60x+20