Respostas

2014-08-04T21:58:41-03:00
A)A = 5
B = -3
C = -2
COMPLETA
b)A = 3
B = 0
C = 55
INCOMPLETA
c)A = 1
B = -6
C = 0
INCOMPLETA
d)A = 1
B = -10
C = 25
COMPLETA