Réponses

Meilleure réponse !
2014-01-06T11:37:48+01:00
(-3x+4)(x-7)(x-1)
=
(-3x+4)(x²-x-7x+1)
=
(-3x+4)(x²-8x+1)
=-3x³+24x²-3x+4x²-32x+4
=-3x³+28x²-35x+4
2014-01-06T12:03:43+01:00
(-3x+4)(x-7)(x-1)
(-3x²+21x+4x-28)(x-1)
-3x³+21x²+4x²-28x+3x²-21x-4x+28
-3x³+28x²-53x+28