11. A buffalo runs slower than a horse.

12. He has started to collect stamps for 6 years.

13. It is interesting to going swimming in the summer.

14. Mr. Thanh is the most humourous person in the area.

15. Houses are often decorated before Tet or Christmas.

6. We are interested in cooking tradditional food .

7. It is good for healthy to doing exercise.

8. I have started to word in this company since 2010.

9. I prefer doing gardening to collecting things.

10. I spent 2 weeks making this eggshell.

1. She is into making pottery.

2. Binh runs slower than Mai.

3. Ha is the most confident member in my group.

4. My brother has learned the piano for 5 years.

5. Chinese cars are cheaper than Japanese cars.

My wife and I have good trips all over the world, and our best vacation was to Kenya by flight.

7² . 7^2x  +4² = 17

<=> 7^2+2x + 16 = 17

<=> 7^2+2x = 1

<=> 2+2x = 0

<=> x = -1

7^2x-2 +4² = 18- 1²⁰²⁰

<=> 7^2x-2 + 16 = 18 -1

<=> 7^2x-2 = 1

<=> 2x-2 = 0 

<=> x = 1

Is his favorite subject physics?

C.

How far: bao xa