Let and be real numbers and z be a complex number. If z^2+ z+ =0 has two distinct non-real roots with Re (z)=1, then it is necessary that

NDA 2018 Mathematics question

Let and be real numbers and z be a complex number. If has two distinct non-real roots with , then it is necessary that

Answer: (C)

With real coefficients the non-real roots are conjugates: and

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-028816