Réponses

2013-10-06T19:11:20+02:00
C =6(x2-3)+(3x+1) (2x-1)
= 6 * x2 + 6 * (-3) + 3x * 2x + 3x * (-1) + 1 * 2x + 1 * (-1)
= 6x2 + (-9x) + 6x2(-3x) + 2x + (-1)
= 12x2 - 10 - 1