http://i.imgur.com/psqwL.gif

I can't seem to solve this one. I tried reversing the signs, which didn't work for me. How do I solve this one?

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- Sep 2nd 2012, 11:58 AMDiesalRationalize the Denominator
http://i.imgur.com/psqwL.gif

I can't seem to solve this one. I tried reversing the signs, which didn't work for me. How do I solve this one? - Sep 2nd 2012, 12:08 PMPlatoRe: Rationalize the Denominator
- Sep 2nd 2012, 01:00 PMDevenoRe: Rationalize the Denominator
that won't quite do the job.

, which certainly isn't rational.

i propose instead multiplying top and bottom by:

, since:

- Sep 2nd 2012, 01:07 PMPlatoRe: Rationalize the Denominator
You are correct. I entered is incorrectly into my CAS.

- Sep 2nd 2012, 07:51 PMProve ItRe: Rationalize the Denominator