Updates:
        Status: Accepted
        Cc: [email protected]
        Labels: -PassedReview -smichr

Comment #6 on issue 2390 by [email protected]: factor(sqrt(x*y), expand=False) -> sqrt(x)*sqrt(y)
http://code.google.com/p/sympy/issues/detail?id=2390

This needs some more attention.

a2
-sqrt(-4*sin(y)**2 - 4*cos(y)**2 + 5)/2
factor(a2)
-I*sqrt(4*sin(y)**2 + 4*cos(y)**2 - 5)/2
factor(a2).subs(y,1).n() == a2.subs(y,1).n()
False

I've tried to make the tweak but I've not been successful. I'm inclined to think it should happen in symbolic_factor_list. I could use some help with this one.

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