A quadratic equation has either two different real roots, one real root, or two conjugate complex roots (this is the case when the discriminant is negative, i.e. when you have no real roots).
Two conjugate complex roots have the same real part and opposite imaginary parts. So, the solutions to Amina's equation will be in this form:
[tex] a+bi,\ \ a-bi [/tex]
For some [tex] a,b\in\mathbb{R},\ b\neq 0 [/tex]