Tính với căn thức

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10. \( \sqrt{13 + 30 + 2\sqrt{9 + 4\sqrt{2}}} \)

11. \( \sqrt{4 + \sqrt{8} + 2 + 2\sqrt{2} - \sqrt{2}} \)

12. \( \sqrt{10 + 2\sqrt{6} + 2\sqrt{10} + 2\sqrt{15}} \)

13. \( \sqrt{10 - 2\sqrt{6} + 2\sqrt{10} - 2\sqrt{15}} \)

14. \( \sqrt{6 - 2\sqrt{2} - 2\sqrt{3} - 2\sqrt{6}} \)

15. \( \sqrt{6 + 2\sqrt{2} + 2\sqrt{3} + 2\sqrt{6}} \)

16. \( \sqrt{12 + 2\sqrt{2} - 2\sqrt{3} - 2\sqrt{6}} \)

17. \( \sqrt{12 + 2\sqrt{2} - 2\sqrt{3} - 2\sqrt{6}} \)

18. \( \sqrt{14 - 6\sqrt{5} + \sqrt{14 + 6\sqrt{5}}} \)

19. \( \sqrt{7 - 2\sqrt{10} - \sqrt{7 + 2\sqrt{10}}} \)

20. \( \sqrt{13 - 4\sqrt{10}} \)

21. \( \sqrt{6 + 2\sqrt{5} + \sqrt{6 - 2\sqrt{5}}} \)