Tất nhiên, dưới đây là 20 ví dụ của mỗi công thức 

**Căn bậc hai (n = 2):**
1. \( \sqrt{4} = 2 \)
2. \( \sqrt{9} = 3 \)
3. \( \sqrt{16} = 4 \)
4. \( \sqrt{25} = 5 \)
5. \( \sqrt{36} = 6 \)
6. \( \sqrt{49} = 7 \)
7. \( \sqrt{64} = 8 \)
8. \( \sqrt{81} = 9 \)
9. \( \sqrt{100} = 10 \)
10. \( \sqrt{121} = 11 \)
11. \( \sqrt{144} = 12 \)
12. \( \sqrt{169} = 13 \)
13. \( \sqrt{196} = 14 \)
14. \( \sqrt{225} = 15 \)
15. \( \sqrt{256} = 16 \)
16. \( \sqrt{289} = 17 \)
17. \( \sqrt{324} = 18 \)
18. \( \sqrt{361} = 19 \)
19. \( \sqrt{400} = 20 \)
20. \( \sqrt{441} = 21 \)

**Căn bậc ba (n = 3):**
1. \( \sqrt[3]{8} = 2 \)
2. \( \sqrt[3]{27} = 3 \)
3. \( \sqrt[3]{64} = 4 \)
4. \( \sqrt[3]{125} = 5 \)
5. \( \sqrt[3]{216} = 6 \)
6. \( \sqrt[3]{343} = 7 \)
7. \( \sqrt[3]{512} = 8 \)
8. \( \sqrt[3]{729} = 9 \)
9. \( \sqrt[3]{1000} = 10 \)
10. \( \sqrt[3]{1331} = 11 \)
11. \( \sqrt[3]{1728} = 12 \)
12. \( \sqrt[3]{2197} = 13 \)
13. \( \sqrt[3]{2744} = 14 \)
14. \( \sqrt[3]{3375} = 15 \)
15. \( \sqrt[3]{4096} = 16 \)
16. \( \sqrt[3]{4913} = 17 \)
17. \( \sqrt[3]{5832} = 18 \)
18. \( \sqrt[3]{6859} = 19 \)
19. \( \sqrt[3]{8000} = 20 \)
20. \( \sqrt[3]{9261} = 21 \)