Réponses

2013-10-08T18:22:50+02:00
-(3x+9)^2=~~~-9x^2-54x-81

(4x+12)^2=~~~~16x^2+96x+144

(5x+15)^2=~~~~25x^2+150x+255
copy of the internet?
-9x^2+54x+81 tnx.
-9x^2-54x+81 u.u
le mec qui fait le type "anglais" ptdrrrrrrrrrr.
I can not speak French but I like your language.