math 11

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simplify (make the radicand as small as possible)

125^-2/3
=125^3/2
=square root(125^3)

I'm stuck in this part what do I do next?

please help

  • math 11 -

    125 = 5^3

    125^-2/3 = 1/(125^2/3) = 1/(5^3)^2/3 = 1/5^2 = 1/25

    -----------
    125^3/2 = sqrt(125)^3
    not the same thing at all

  • math 11 -

    ok thanx

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