Réponses

2014-02-07T17:51:39+01:00
D=7x*(1-2x)+4x²
D=7x-14x²+4x²
D=-10x²+7x

E=4x*(x²+x+1)-x²(1-x)
E=4 x^{3} +4 x^{2} +4x- x^{2} + x^{3}
E=5 x^{3}+3 x^{2} +4x