9^2 + y^2 + 6xy Hãy viết biểu thức đó dưới dạng bình phương

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Trả lời 2 bài (10 câu sau [5 câu khoanh, 5 câu đọc hiểu]) I. Read the following passage and choose the best answer for each statement or question. Almost everybody has some kinds of hobby. My hobbies are listening to music and watching television. I am very fond of music. When I am free, I often listen to my favorite songs from an old cassette recorder. At weekends, I usually go to music shops in downtown areas to buy good CDs. Of the famous pop singers, I prefer Frank Sinatra, Elvis Presley, Madonna and Paul McCartney. I also spend an hour after dinner watching news and documentary programmes. I particularly enjoy the programme ''The World Here and There'' because it broadens my knowledge of nature and human civilizations. I think that my hobbies are very useful. They widen my knowledge, relax my mind, and make me feel better about myself. 1. The writer's hobbies are____________. A. listening to music and playing games B. playing games and watching television C. watching TV and listening to music D. reading books and playing games 2. The writer often listens to his favourite songs from __________. A. a cassette recorder B. a CD player C. a mobile phone D. a computer 3. What does he usually do at weekends? A. He usually listens to music with his friends. B. He usually stays at home and listens to music. C. He usually listens to music at music shops. D. He usually goes downtown to buy CDs. 4. When does the writer usually watch TV? A. before dinner B. before lunch C. after dinner D. after lunch 5. Why does he enjoy the programme "The World Here and There"? A. Because he can see his most famous singers. B. Because it widens his knowledge. C. Because it contains some music programmes. D. Because he prefers to listen to Paul McCartney. VIII. Read the text and answer the questions. Hassan has a very interesting hobby. He collects tropical fish! He has a huge aquarium in his bedroom. He has been collecting fish since he was four. His first fish was an Angel fish. The only problem is that they can eat smaller fish. Hassan has visited a lot of different countries like Australia and dived in the beautiful weather there. He has always loved the ocean. Now, he’s fourteen. He has had his big aquarium for three years, since he was eleven. Last year when Hassan was in Caribbean for his holiday, he saw sharks when he was diving. He wants to have an aquarium where he can keep one or two small sharks, but it’s quite difficult in England. He works as a volunteer at the aquarium of his local zoo. There he can feed the big fish. He hasn’t fed the sharks yet, because he is too young. 1. What does Hassan collect?  ..................................................................................... 2. Where is Hassan’s huge aquarium?  ..................................................................................... 3. How old was Hassan when he had his aquarium?  ..................................................................................... 4. Where did he see sharks when he was diving?  ..................................................................................... 5. Can he feed sharks now?  .....................................................................................