The equation `|z-1|^2+|z+1|^2=2` represents (1) a circle of radius 1(2) a straight line (3) the ordered pair (0, 0) (4) none of these

The equation zbarz + (2 - 3i) z + (2 + 3i) barz + 4 = 0 represents a circle of radius

If z^2+z|z|+|z^2|=0, then the locus z is a. a circle b. a straight line c. a pair of straight line d. none of these

If z^2+z|z|+|z^2|=0, then the locus z is a. a circle b. a straight line c. a pair of straight line d. none of these

If the equation |z-z_1|^2 + |z-z_2|^2 =k , represents the equation of a circle, where z_1 = 3i, z_2 = 4+3i are the extremities of a diameter, then the value of k is

If the equation |z-z_1|^2 + |z-z_2|^2 =k , represents the equation of a circle, where z_1 = 3i, z_2 = 4+3i are the extremities of a diameter, then the value of k is

If z^(2)+z|z|+|z^(2)|=0, then the locus z is a.a a circle b.a straight line c.a pair of straight line d.none of these

If the equation |z-z_(1)|^(2)+|z-z_(2)|^(2)=k represents the equation of a circle,where z_(1)=2+3 iota,z_(2)=4+3t are the extremities of a diameter,then the value of k is