If ω1997=1 and ω≠1, then
11+ω+11+ω2+⋯+11+ω1997
can be written in the form m/n, where m and n are relatively prime positive integers. Find the remainder when m+n is divided by 1000.
I really can't seem to find the complex number w that satisfies this condition, and I cannot find any patterns/telescoping methods. Can anyone help me or give me some pointers?
Thanks!
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