Updates:
Cc: mattpap
Labels: Polynomial
Comment #1 on issue 1899 by asmeurer: factor(3 + x - x*(1 + x) + x**2) != 3
http://code.google.com/p/sympy/issues/detail?id=1899
Well, factor() *is* the opposite of expand(), which does this fine.
So I guess the question is: Should factor(p + q), where p and q are already
factored, try to expand and refactor
the whole thing? (Answer: probably)
By the way, the latest polys is polys9, and it doesn't work there either.
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