The possible roots are;
[tex]3i\text{ , 5 and 2+}\sqrt[]{5}[/tex]Here, we want to get the possible other roots
Now, we start from the complex root;
This is -3i
Mathematically, we can have that as;
[tex]\sqrt[]{-9}\text{ and the roots are -3i and 3i}[/tex]That means 3i is a possibe root
Furthermore, we can have;
[tex]2+\sqrt[]{5}[/tex]This is because the root of 5 can be positive and negative
Lastly, we can have the positive value of 5, given that we do not have the degree of the polynomial to ascertain the possible number of roots
