Réponses

2014-02-08T11:17:27+01:00
X(x+2)=x²+2x
b.x(x-6)=x²-6x
c.3x(x+5)=3x²+15x
d.5x(x-1)=5x²-5x
e.6x(2+9x)=12x+54x²
f.x(x²-4)x^3-4x