simplifying radical expression with exponents

9:27

4:15

21:34

30:00

2:44

3:15

2:05

15:11

2:04

1:37

2:44

12:37

15:10

9:03

15:11

17:32

4:34

4:27

15:10

9:37

15:10

6:13

15:01

11:33

11:33

5:03

6:49

5:57

6:56

3:35

7:39

14:29

13:58

19:06

6:14

17:32

11:32

11:32

2:00

5:33