Bài 13: Tìm x biết: a) (x-2)(x-3)-D0. b) (x-3)(x-4)-0. c) (x-7)(6-x)=0. d) (x-3)(x-13)=0. The Bài 14: Tìm x biết: a) (12-x)(2-x)=0. b) (x-33)(11-x)=0. c) (21-x)(12-x)=0. d) (50-x)(x-150) =0. Bài 15: Tìm x biết: a) 2x +x = 45. b) 2x +7x = 918. c) 2x+3x 60+5. d) 11x+22x 33.2.

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Exercise 7. Reoder the words to make sentences. 1. address / what / Mr Hung’s / is / ? =>……………………………………………………………………………… 2. Does / your / with / brother / who / live / ? =>……………………………………………………………………………… 3. is / modern / my / small / house / but / . =>……………………………………………………………………………… 4 . her / 20 / is/ address / Ba Dinh District / , / Ngoc Ha street/ , /. =>…………………………………………………………………………….. 5. In / mountains / a / she / village / lives / the / small / in / . =>……………………………………………………………………………… 6. On / they / of / the / Tower / floor / live / tenth / Ha Noi/ . =>……………………………………………………………………………… 7. Hometown/ like / what / her / is/ ? =>……………………………………………………………………………… 8. small / quiet / village / and / it / a / is. =>……………………………………………………………………………… 9. I / is/ and / beautiful / my / it / like / because / hometown / quiet. =>……………………………………………………………………………… 10. big/ do / live / Trung’s / in / city / parents / a / ? =>……………………………………………………………………………… Exercise 8 . Underline one mistake in each sentence and correct it. 1. I live in the twenty-first foor of City Tower. => ……………………………………………………………………………… 2. Does your parents live in a small village? => ……………………………………………………………………………… 3. There are two high building near my house. => ……………………………………………………………………………… 4. My sister doesn’t like in a big city. => ……………………………………………………………………………… 5. This cities are large and busy. => ……………………………………………………………………………… 6. Living in a big city is more noisy than living in the countryside. => ……………………………………………………………………………… 7. This building is tall than that one. => ……………………………………………………………………………… 8. What do these places like? - They are beautiful. => ……………………………………………………………………………… 9. My best friend, Lisa likes living at the mountains. => ……………………………………………………………………………… 10. It is a nice and modern city, because I want to live there. => ……………………………………………………………………………… Exercise 9: Read and answer the questions. My name’s Nam. I was born in Nghe An, but now I live with my parents in Ha Noi. It is a big city and busy city. I live in a flat in the city centre. My address is 275, Nguyen Trai Street, Ha Noi. We live on the twentieth floor of Gold Tower. Our flat is nice and modern. It has one living room, two bedrooms, two bathrooms and one kitchen. It has a good view, so we can see the whole city. I like this place because it is nice, clean and safe. 1. Where was Nam born? => ……………………………………………………………………………… 2. What’s his address? => ……………………………………………………………………………… 3. Who does he live with? => ……………………………………………………………………………… 4. What is his city like? => ……………………………………………………………………………… 5. Do they live on 10¬th floor of the tower? => ……………………………………………………………………………… 6. Is the flat old? => ……………………………………………………………………………… 7. How many rooms are there in his flat? => ……………………………………………………………………………… 8. Why does he like this place? => ……………………………………………………………………………… Exercise 10: Rewrite the sentences. 1. What is his address? => Where………………………………………………………………………… 2. Hoa lives at 20, Xuan Thuy Street, Cau Giay District, Ha Noi. => Hoa’s ………………………………………………………………………… 3. Ha Noi Tower is behind my house. => My house is…………………………………………………………………… 4. Where is your uncle from? => Where does………………………………………………………………… 5. What is his city like? => ……………………………………………………………………………… 6. Tom and his friend come from America. => Tom and his friend.………………………………………………………… 7. Landmark Tower is 330 meters high. Lotte Tower is 270 meters high. => Landmark Tower is……………………………………………………………

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