CathyCove
CathyCove
16-10-2015
Mathematics
contestada
How to simplify (81^-0.25)^3
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Аноним
Аноним
16-10-2015
(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 <-----
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