why won't simplify  square roots?    
   sage: assume(x>2)
sage: sqrt(x^2 - 2*x + 1).simplify_full()
sqrt(x^2 - 2*x + 1)
You can use the canonicalize_radical method for that:
sage: e = sqrt(x^2 - 2*x + 1)
sage: e.canonicalize_radical()
x - 1
 However, the assumptions are not taken into account, please read the warning in the doc:
sage: e.canonicalize_radical?
 Asked: 2016-11-24 07:42:57 +0100
Seen: 471 times
Last updated: Nov 24 '16
 
                
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