Directions: Simplify and rationalize the denominators.

11. √-9/4

12. √-1/8

13. √-4/27

14. √-1/3

15. 4√-3/2

16. -3√-2/27

17. √-4/27

18. 10√-24/75

19. -2√-81/32

20. (2/3)√-27/128