find the cuberoot of by prime factorisation by the method of 729
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729 = 3 x 3 x 3 x 3 x 3 x 3 = 3^6
Cube root of any number is 1/3 power of that number .
Hence cube root of 729
= (3^6)^1/3
= (3)^6/3
=3^2
=9
answer is 9
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