Thread: Rationalize the Denominator

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?

Originally Posted by Diesal

Multiply numerator and denominator by

that won't quite do the job.



, which certainly isn't rational.

i propose instead multiplying top and bottom by:

, since:

You are correct. I entered is incorrectly into my CAS.

Originally Posted by Deveno

that won't quite do the job.



, which certainly isn't rational.

Though you could then multiply top and bottom by ...