You can put this solution on YOUR website! 64 ^7/6.
First: 64 to root 6 = 2
Second: 2 to the power 7 = 128.
Your answer = 128.
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81^3/2
First: the square root of 81 = 9
Second: 9 to the power 3 = 729.
Your answer = 729
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Hope this helps.
:-)