Réponses

2014-03-17T19:43:02+01:00
A=(3x+2)(3x+2)+(6x-4)(x+1)
A=9x²+6x+6x+4+6x²+6x-4x-4
A=15x²+14x
2014-03-17T19:43:21+01:00
=(3x+2)²+(6x-4)(x+1)
=9x²+12x+4+6x²+6x-4x-4
=15x²+14x