Respostas

2014-05-21T20:47:06-03:00
1*1/4*4 = 1/16

-1*-1/6*6 = 1/36
2014-05-21T20:50:15-03:00
A, (1/4).(1/4) = 1/16
b, (-1/6).(-1/6)= 1/36