z+2i=a+(b+2)i

|z+2i|=√(a^2+(b+2)^2)<； =8√3

a^2+(b+2)^2<； = 192

If it exists,

T 2+(4n 2+TN+ 14+2) 2

Let f be the mapping from real number set to complex number set.

That is, a number in R corresponds to a number in C through the action of F.

For example, f (x) = 2+xi, x ∈ r.