Réponses

2013-12-14T19:36:10+01:00
A) B = -2 * 1 - 3 *(-2) - 4
= -2 + 6 - 4
= 4 - 4
= 0

b) B = -2 * (-1) - 3 * 2 - 4
= 2 - 6 - 4
= -4 - 4
= -8

c) B = -2 * (-2) - 3 * (-3) - 4
= 4 + 9 - 4
= 13 - 4
= 9