please help me simplify the following expression --

(ab)^-1 / (a^-2 + b^-2)if you could explain it with an appropriate property, that would be great!!

thanks..!!

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- June 1st 2008, 11:58 AMneedymathpersonSimplify an Expression with Negative Exponents
please help me simplify the following expression --

**(ab)^-1 / (a^-2 + b^-2)**if you could explain it with an appropriate property, that would be great!!

thanks..!! - June 1st 2008, 01:21 PMmasters

I think that's right. Latex notation was brutal on this one...for me, anyway. I welcome others to detect any errors. - June 1st 2008, 01:26 PMtopsquark
- June 1st 2008, 01:30 PMMoo
Hi !

A slightly different approach :)

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Using the power rule :

-->

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(Crying) one extra equality - June 1st 2008, 01:36 PMmasters
Always keep it interesting, Moo. Good job!!

- June 1st 2008, 01:44 PMneedymathperson
thank you both for your help! (Clapping)

- June 2nd 2008, 05:34 AMSoroban
Hello, needymathperson!

One different step . . .

Quote:

Multiply top and bottom by