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If z1, z2 and z3, are the vertices of a...

If `z_1, z_2 and z_3`, are the vertices of an equilateral triangle ABC such that ` |z_1 -i| = |z_2 -i| = |z_3 -i|`.then `|z_1 +z_2+ z_3| `equals:

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  13. If z is a complex number, then find the minimum value of |z|+|z-1|+|2z...

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