Réponses

2012-11-05T17:36:01+01:00

F(x)=(2x+5)(x-4)+2x+5=2x²-8x+5x-20+2x+5=2x²-x-15

 

G(x)=(2x-3)(3x+7)-2x+3=6x²+14x-9x-21-2x+3=6x²+3+3

2012-11-05T17:36:07+01:00