Réponses

2013-12-15T19:07:11+01:00
D = 6x²+6x-x-1-(4x²-6x-6x+9)
D = 6x²+6x-x-1-4x²+6x+6x-9
D = 2x²+17x-10

E = 4x²-2x-2x+1-(2x²+10x-x-5)
E = 4x²-2x-2x+1-2x²-10x+x+5
E = 2x²-13x+6

F = 9x²-6x-6x+4-25
F = 9x²-21