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Published on Mar 14, 2013
If you have a fractional power in the form a^(m/n) then this can be written as the nth root of a, to the power of n. Examples include having to simplify 8^(2/3), 9^(3/2) and 16^(1/4). So to work out 8^(2/3) first work out the cube root of 8 which is 2 and then square the 2 to give a final answer of 4.