complex no.s

i got it by the normal method of identities in eq triangle thing in complex numbers. but can we do this by taking a complex number as a vector?
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@Apu
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Opt
Opt2w ago
Wlog take z0 to be the origin. Wlog we can write each of z1, z2, z3 as the third roots of unity multiplied by a complex phase. Taking the complex phase (squared) out of the summation, you end up with sum of the three third roots of unity which is zero
vj25_
vj25_OP2w ago
hmm i am getting answer by this method got it thanks +solved @Opt
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