Réponses

2014-01-12T19:01:18+01:00
E = (2x-1)(-3x+2)-(6x+1)
= -6x²+4x+3x-2-6x-1
E = -6x² + x - 3

E = -6(-2)² -2 -3
= -24 - 5
E = -29