Réponses

Meilleure réponse !
2012-05-17T19:15:35+02:00

A=(x+2)(2x-1)+(3x+1)(x-4)

A = 2x²-x+4x-2+3x²-12x+x-4

A = 5x²-8x-6

 

B =(4x+1)(x-2)-(x+3)(x-1)

B = 4x²-8x+x-2-x²+x-3x+3

B= 3x²-9x+1

 

FIN