Let `z` be a complex number such that the imaginary part of `z` is nonzero and `a = z^2 + z + 1` is real. Then a cannot take the value

Let z be a complex number such that the imaginary part of z is nonzero and a = z2 + z + 1 is real. Then a cannot take the value (A) –1 (B) 1 3 (C) 1 2 (D) 3 4

Let z be a complex number such that the imaginary part of z is nonzero and a = z^(2) + z+z+1 is real. Then a cannot take the value.

Let z be any complex number such that the imaginary part of z is non zero and a = z^2+z+1 is real. Then a cannot take thevalue

Let z be a complex number such that the imaginary part of z is non zero and a=z^2+z+1 is real then a cannot take the value

Let z be a comples number such that the imaginary part of z is non-zero and a=z^(2)+z+1 is real. Then a cannot take the value :

Let z be a complex number satisfying 2z+|z|=2+6i .Then the imaginary part of z is

If a complex number Z is purely imaginary then conjugate of Z is

If a complex number Z is purely imaginary then conjugate of Z is