Updates:
        Labels: NeedsReview smichr

Comment #1 on issue 2834 by [email protected]: naive radical removal can lead to multiplying by 0/0
http://code.google.com/p/sympy/issues/detail?id=2834

By collecting similar radicals before processing this problem can be avoided...though (as in the difficulty of proving A=B in general) there are problem some pathological expressions where this might still fail. But I think this is a step in the right directions.

https://github.com/sympy/sympy/pull/660

If anyone is interested and can review that I would appreciate it. And on a related note there is a sqrtdenest modification in https://github.com/sympy/sympy/pull/686

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