Posted by Bill on Sunday, March 9, 2008 at 10:55pm.
Hey , can anyone help me out please? i'm really confused with this problem.
Prove that:
a^(m/n)= n(radical sign) a^m
Any help is appreciated, thank you.

algebra  drwls, Monday, March 10, 2008 at 12:13am
The nth root of a^m is BY DEFINITION a^(m/n)
If you want a more convincing "proof", raise both sides of the equation to the nth power.
The left side is a^(m/n) multiplied by itgself n times, yielding a^m.
The right side is also a^m, because you started out with the nth root of that quantity.

algebra  Bill, Monday, March 10, 2008 at 12:24am
ok, thanx mate
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