SOLUTION: write the expression below in radical notation. 4y^(-4/7)

Question 200348: write the expression below in radical notation.
4y^(-4/7)
Found 2 solutions by jim_thompson5910, solver91311:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

So where

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Edit: The next solution is correct in saying that you should rationalize the denominator (forgot all about that...); however, he went about rationalizing the denominator in the wrong way.

To rationalize the denominator of , you need to multiply both the numerator and denominator by 6 copies of . This way, you'll end up with

which will simplify to

So where

Note: I skipped a bunch of steps. Let me know if you need to see them. Also, you can verify your answer by graphing the original expression and the final expression.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Jim's answer is absolutely correct as far as it went, but you should always rationalize your denominators:

John

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