I really need help understanding this problem!

Question

I'm really confused on how 3sq 531441  equals 81

Answer 1

Step 1:

The expression is .

Use the property of exponent : .

We can write as and also in either of the cases.

Case 1:

The expression is .

Rewrite as .

First apply the cube root.

Case 2:

The expression is .

Rewrite  .

Solution :

.