Respostas

2014-04-18T08:09:15-03:00


resolver pela regra de sarrus

3 4 1 3 4

4 5 1 4 5

X 1 1 X 1

15+4X+4- 16-5X=0

X=0

15+4X+4- 16-5X=0
15+4X+4- 16-5X=0 ------> 15 + 4 - 16 = 3 4x - 5x = -x - x + 3 = - x = - 3 x = 3