Réponses

2012-12-16T16:51:47+01:00

B = x²-6x+9-(nx-2n-x+2)

= x² -6x+9-nx+2n+x-2

= x² -nx+2n55x+7

 

C= 16a²-6a-8a+3 -(16a²-16a+4)

= 16a²-6a-8a+3-16a²+16a-4

= 2a-1