Respostas

2014-02-17T18:52:41-03:00
16 = 2⁴

 \frac{1}{16}  =  \frac{1}{2^4}  = 2^-^4

log₂ 1/16 = x

2^x = 2^-^4  simplifica o 2

x = - 4
5 4 5