Which of the following cannot be true for the given quadratic equation ax2+bx+c=0;c≠0 if ratio of roots of this equation is equal to it's reciprocal?
If a, b, c ∈ R and a ≠ 0, c < 0, and if the quadratic equation ax2+bx+c = 0 has imaginary roots, then a + b + c is