Réponses

2013-11-25T18:08:03+01:00
A= -4(x-3)²
=-4(x²-6x+9)
=-4x²+24x-36

B= (x+1)(x-2)(x+3)
=(x+1)(x²+3x-2x-6)
=(x+1)(x²+x-6)
=x³+x²-6x+x²+x-6
=x³+2x²-5x-6