Respostas

2014-06-22T22:38:21-03:00
2/3.8^2/3-2/3.8^(-2/3)
8 elevado a 2/3= ∛8²=4
8 elevado a -2/3=1/∛8²=1/4
assim,
(2/3.4)-(2/3.1/4)=8/3-1/6=15/6