1. educated 

2. player

3. competition

4. symbols

5. weather forecaster

6. creative

7. twelfth

9. relatives

10. length

1)Tính:

a)\(\sqrt{3-2\sqrt{2}}+\sqrt{11-6\sqrt{2}}\)

b) \(\sqrt{12-6\sqrt{3}}+\sqrt{3}\)

2) Rút gọn biểu thức

A=\(\sqrt{x^2-4x+4}+\sqrt{x^2}\) vs 0≤ x ≤2