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Math Help - radical expressions/exponents.

  1. #1
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    radical expressions/exponents.

    mmkay so im new at this..but i cant figure these out to save my life.. and i have a test in about six hours which is what either make me pass or fail the class..so herei go:

    simplify:

    the cube root of 'A' to the fourth over nine.
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  2. #2
    Lord of certain Rings
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    Quote Originally Posted by morgan. View Post
    mmkay so im new at this..but i cant figure these out to save my life.. and i have a test in about six hours which is what either make me pass or fail the class..so herei go:

    simplify:

    the cube root of 'A' to the fourth over nine.
    You mean (\sqrt[3]{A})^{\frac49}?

    (\sqrt[3]{A})^{\frac49} = ((A)^{\frac13})^{\frac49} = (A)^{{\frac13}{\frac49}} = A^{\frac4{27}}

    But I doubt this is a simplification... looks like a complication....
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  3. #3
    A riddle wrapped in an enigma
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    How do we know it's not:

    \frac{(\sqrt[3]a)^4}{9}
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