Question 1062528
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The competent mathematician will never write 

". . .  imaginary cube roots of unity",


because they are not imaginary. They are COMPLEX instead.



What is the source of this problem ?



I just saw this problem once (long time ago) in this forum and worked on it.


And my conclusion was: the formulation is wrong/incorrect.


So, my question is: WHAT IS THE SOURCE OF IT ?