In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
a. √361
b. √81
c. -√64
Step 02:
simplify the expression:
a.
[tex]\sqrt[]{361}\text{ = }19[/tex][tex]\sqrt[]{81}\text{ = }9[/tex][tex]-\sqrt[]{64}=-8[/tex]
That is the full solution.
c.