Answer:
[tex]5 \sqrt{3}i [/tex]
Step-by-step explanation:
Assuming one root of a polynomial function is
[tex] - 5 \sqrt{3} i[/tex]
Then the other root is
[tex]5 \sqrt{3}i[/tex]
The reason is that , complex roots of polynomial functions occur in pairs.
One complex root is the conjugate of the other.
This means that, if
[tex]x - yi[/tex]
is a root, then
[tex]x + yi[/tex]
is also a root.
