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mathTalk
the 9th roots of unity ? the 9th roots of unity ? @Mathematics
(x^3)^3-1^3 =0 (x^3-1)(x^6+x^3+1)=0 x=-1,-1,-1 ??? how do we find them
Sorry I'm not of much assistance, but perhaps this helps? http://paul-mccarthy.us/Misc/ProvingRelations.htm