I suspect a typo
(27/8)^(3/2)
(3^3/2^3)^3/2
sqrt (3^9/2^9)
about 6.2
(3 3/8)^1 ½
2 answers
could be a typo. It would be much nicer if it were supposed to be
(27/8)^(2/3) = 3^2/2^2 = 9/4
(27/8)^(2/3) = 3^2/2^2 = 9/4