combine like radicals to get your answer.
image attached

Answer:
So the final answer is
[tex]-8\sqrt{3}[/tex]
Step-by-step explanation:
Radicals:
In mathematics, a radical expression is defined as any expression containing a radical (√) symbol. Many people mistakenly call this a 'square root' symbol, and many times it is used to determine the square root of a number. However, it can also be used to describe a cube root, a fourth root, or higher.
The given expression is
[tex]-5\sqrt{3} -3\sqrt{3}[/tex]
Now take common radical out so we will get
[tex]\sqrt{3}(-5-3)[/tex]
Now add the Parenthesis part.
[tex]\sqrt{3}(-8)[/tex]
So the final answer is
[tex]-8\sqrt{3}[/tex]