Réponses

Meilleure réponse !
2014-05-05T14:37:08+02:00
B = x(x-2)+4x-5x(3x-1) = (x²-2x) + 4x - (15x²-5x) = x²-2x+4x-15x²+5x = -14x²+7x
2014-05-05T15:15:02+02:00
B = x(x-2)+4x-5x(3x-1)
b = x²-2x +4x-15x²+5x
b = -14x² +7x