2 0 Sage says equation isn't true while Mathematica says it is ( 2017-10-01 20:31:56 +0100 )
0 -2 Sage says equation isn't true while Mathematica says it is ( 2017-10-01 20:31:54 +0100 )
2 0 Sage says equation isn't true while Mathematica says it is ( 2017-10-01 20:30:22 +0100 )