How to simplify (81^-0.25)^3
(81^-0.25)^3 = ( 1 / (81^0.25) )^3 81^.025 is the 4th root of 81 which is 3 Therefor ( 1 / (81^0.25) )^3 = (1/3)^3 (1/3)^3 = 1/27 <-----Hope I Helped You!!! :-)Have A Good Day!!!