Homework Help: math 11

Posted by MathHelp on Thursday, January 12, 2012 at 12:47am.

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 - Steve, Thursday, January 12, 2012 at 6:21am
125 = 5^3

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

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125^3/2 = sqrt(125)^3
not the same thing at all
math 11 - MathHelp, Thursday, January 12, 2012 at 8:42am
ok thanx

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