solve: (81^-.25)^3
they want the answer as a fraction, how should i do that?
(81^-.25) = 1/3. 1/3^3 = 1/3 * 1/3 * 1/3 = 1/27.
how did you get 1/3? :)
(81^-.25)^3
Note that this is really the same as
[ 81 ^ (-1/4)] ^3 =
[ 1/ 81^(1/4) ] ^3 =
[1 / 4√81 ]^3 =
[ 1 / 3 ]^3 =
1 / 27 .....just as PsychoBaker found....!!!
