Rewrite each expression so it does not contain any radical terms. If it is not a real number, enter None

Answer:
a) None
b) -19
Step-by-step explanation:
Rewrite the expressions;
[tex]a)\text{ }\sqrt[]{-64}=\text{ None}[/tex]Since it cannot be a negative term inside the root, therefore it is not a real number.
b)
[tex]-\sqrt[]{361}=-19[/tex]