Suppose `z_(1), z_(2), z_(3)` are vertices of an equilateral triangle whose circumcentre -3 + 4i, then `|z_(1) + z_(2) + z_(3)|` is equal to

If z_(1),z_(2), z_(3) are vertices of an equilateral triangle with z_(0) its centroid, then z_(1)^(2)+z_(2)^(2)+z_(3)^(2)=

If z_(1),z_(2),z_(3) be vertices of an equilateral triangle occurig in the anticlockwise sense, then

Suppose z_(1),z_(2),z_(3) are the vertices of an equilateral triagle incrihed inthe circle |z|=2. If z_(1)=1+sqrt(3i) and z_(1),z_(2),z_(3) are in the clockwise serse,then is