In the class, the teacher is explaining how to solve a quadratic equation by completing the square method. He says that every quadratic equationax2+bx+c=0 can be written as (Ax+B)2 = C. Is it true or false?
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