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answered 2019-09-02 19:21:56 +0100
Works For Me (TM):
sage: (3*e+2*I)*(-3+pi*I) (I*pi - 3)*(3*e + 2*I) sage: ((3*e+2*I)*(-3+pi*I)).n() -30.7477217633110 + 19.6192026680207*I
What are you using (Sage version, interface, etc..) ?