Hi. I don't know the answer to this one, could someone check my reasoning and working please?

Simplify

Working on the denominator only

Denominator is

So I now have

Then

Which gives me my answer

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- Oct 2nd 2009, 07:17 AMMeggomumsieSimplify involving indices
Hi. I don't know the answer to this one, could someone check my reasoning and working please?

Simplify

Working on the denominator only

Denominator is

So I now have

Then

Which gives me my answer - Oct 2nd 2009, 07:44 AMramiee2010

or

- Oct 2nd 2009, 07:59 AMramiee2010Quote:

Working on the denominator only

Quote:

- Oct 2nd 2009, 08:07 AMMeggomumsie
Thank you. Was I correct in my thinking to here?

http://www.mathhelpforum.com/math-he...b040156b-1.gif even though it is probably not the usual way of dealing with this kind of question?

and is the final and correct answer to this question please? - Oct 3rd 2009, 09:15 AMialbrekht

or