5 ngũ 25 . 5 ngũ x.1 = 5 ngũ 25

x ² - 2(m+1)x + m - 4 = 0 Chứng minh rằng biểu thức A = $x_{1}$ (1-$x_{2}$ ) + $x_{2}$ (1-$x_{1}$ ) không phụ thuộc vào m , trong đó x1 ,x2 là nghiệm pt đã cho

TEST 1 I/ Find the words which have a different sound in the underlined part. 1. A. ask B. plastic C. dad D. grandparents 2. A. clear B. dear C. hair D. here II/ Choose the correct answer (A, B, C or D) to complete each of the following sentences. 1. Hang is……………….in the class. A. the most intelligent B. the more intelligent C. most intelligent D. intelligentest 2. “……………….is in front of your house?” - “The movie theater is.” A. Who B. What C. Where D. When 3. Long is a bad swimmer. He swims……………… A. bad B. badly C. good D. well 4. Lan ……………Ho Chi Minh City many times. A. goes B. went C. has been D. will go 5. In 2030, doctor robots .........................help sick people. A. can B. will be able to C. could D. can't III/ Supply the correct form of the words in brackets to complete the sentences. 1. TV ………….…………is a person who watches TV (view) 2. The Discovery channel makes …………………………… fun for kids (educate) 3. This chair is the most ……………………………… (comfort) 4. Dan Le is my favorite ………………………………. (weather) 5. This house has three bedrooms. The ……………………… room is for my parents. (big) Giúp mình với ạ!

mọi người giúp em nha cảm ơn nhìuuuuuu lắm :)))) Môi trường ngày nay đang kêu cứu. Hãy viết một bài văn trình bày suy nghĩ của em về vấn nạn trên.

Giải bài 11 cho mình cần gấp Nhìn ảnh

1:đúng ghi Đ , sai ghi S a, 32 ha = 0,32 km2 b, 1dm3 5cm3 = 1005 cm3 c, 1 ngày 16 giờ = 40 giờ d, 2,7 giờ = 2 giờ 7 phút 2.Tìm y 4,6 x y + y + 4,4 x y = 2017 3 , đặt tính 81,952 : 2,6

PHONETIC I/ Choose the word whose underlined part is pronounced differently from that of the others in each group. 1. A. student B. sugar C. singer D. street 2. A. ocean B. circle C. city D. ceiling 3. A. headache B. school C. machine D. chemist 4. A. tables B. roses C. telephones D. shoes 5. A. summer B. study C. uncle D. studpid II/ Choose the word which main stress syllable is placed differently from that of the others in each group. 6. A. lucky B. money C. country D. repeat 7. A. listen B. armchair C. crowded D. alive 8. A. beautiful B. education C. interesting D. television 9. A. city B. noisy C. cartoon D. swimming 10. A. enjoy B. bicycle C. family D. teacher VOCABULARY AND GRAMMAR III/ Choose the best word or phrase to complete each of the following sentences. 11. You should …………. the bus instead of going by motorbike. A. to take B. taking C. take D. takes 12. “………. would you like?” – “I would like some oranges.” A. Which B. What C. How D. Who 13. Mary ………….. thirteen on her next birthday. A. is B. are C. be D. will be 14. There ……….. lots of milk in the fridge. A. is B. are C. be D. will be 15. There’s ice on the road. You ………….. drive carelessly. A. should B. must C. shouldn’t D. will IV/ Fill each blank with a word or phrase in the box. game shows popular cartoons remote control viewers 16. Do you like watching ……………………..? – Yes, very much. I like Tom and Jerry most. 17. Millions of …………………… will watch the football match on TV this evening. 18. We use a ……………………….. to change the channel from a distance. 19. I like ………………………… best, especially Who’s Millionaire show. 20. The most ………………………….. TV channel in my country is VTV1. V/ Circle the letter A, B, C or D to indicate the underlined part that need correction in each of the following questions. 21. Lan have breakfast at 6.30 every day and then she goes to school. A B C D 22. How many water do you drink a day? – 2 litres. A B C D 23. There are any children in the classroom. A B C D 24. Because she feels thirsty, she wants drink something. A B C D 25. How about go swimming this afternoon? A B C D READING VI/ Choose the best answer A, B, C, or D to complete the following passage. Television now plays such an important role in so many people’s life. First of all, (26) ……….. is not only a convenient source of entertainment, but also rather cheap one. For a family of four, for example, it is more convenient as well as cheaper to sit comfortably (27) …………. home than to go out. They don’t have to (28) …………. for expensive seats at the theatre or in the cinema. All they have to do is to turn a switch and they can (29) …………. plays and films of every kind and the latest exciting (30) ………… matches or tennis competitions all over the world. 26. A. radio B. programmes C. television D. Internet 27. A. in B. at C. on D. of 28. A. pay B. watch C. look D. live 29. A. look B. visit C. see D. read 30. A. karate B. swimming C. running D. football VII/ Read and answer the following questions. Hello, my name is Rosy. I love dancing and I am going to be a ballet dancer when I grow up. I go dancing three times a week. I am going to travel all over the world and I am going to learn French and Russian because I want to dance in Paris and Moscow. I am going to teach dancing and I am going to open a dancing school. I like planning my future. It is very interesting and exciting. 31. What is Rosy going to be when she grows up? ……………………………………………………………………………………………….. 32. How often does she go dancing? ……………………………………………………………………………………………….. 33. Where does she want to dance? ……………………………………………………………………………………………….. 34. Is she going to teach dancing? ……………………………………………………………………………………………….. 35. How many languages is she going to learn? ……………………………………………………………………………………………….. WRITING IX/ Rearrange the words to make meaningful sentences. 41. never / She / with / classmates / goes camping / her ……………………………………………………………………………………………. 42. Trung’s house / smaller / is / house / my / than …………………………………………………………………………………………… 43. building / tallest / is / our / town / this / in / the …………………………………………………………………………………………… 44. any / is / rice / not / There / left ………………………………………………………………………………………….... 45. often / you / go / do / how / supermarket / to / the? …………………………………………………………………………………………… X/ Rewrite the following sentences so that their meaning stays the same as the given ones. 46. My father usually drives to work. My father usually goes ………………………………………………………………. 47. No one in the class is cleverer than Tim. Tim …………………………………………………………………………………….. 48. The Red River is 1,200 kilometers long. The Nile River is 6,437 kilometers long. The Nile River is much ………………………………………………………………. 49. These trousers are so long. What …………………………………………………………………………………! 50. How much is your new bike? What ………………………………………………………………………………….? Giúp mình với ạ!

Một mảnh vườn hình chữ nhật có chiều dài 82m, chiều rộng bằng 4/5 chiều dài. Trên mảnh đất người ta dành ra 30% diện tích để trồng cam, 45% diện tích để trồng táo, phần còn lại để trồng ổi. Tính diện tích trồng cam, diện tích trồng táo, diện tích trồng ổi. Mọi người giúp em với ạ

Cho x, y, z thoả mãn x+y+z=3. Tìm GTNN của Q=1/(x+x^2)+1/(y+y^2)+1/(z+z^2) GIÚP MIK GẤP NHA.MIK CẢM ƠN TRC!!!

Mọi người giúp em giải câu cuối vớiT.T em cảm ơn