`C = 9-6x+x^2`
`C = x^2 - 6x + 9`
`C = ( x-3)^2`
Vậy biểu thức luôn dương
Đáp án: Hình ảnh
Giải thích các bước giải:
4 câu thoi ,pleaseeeeee 1. I have just bought two______ school bags from a book shop near here. A. beautiful black Italian leather B. Italian beautiful leather black C. black beautiful Italian leather D. beautiful Italian black leather 2. I feel sick, so the doctor wants to______ my temperature and see if I’m running a fever. A. do B. get C. take D. collect 35. Mai is a more careful writer than I am. → Mai writes……………………………………………………………………..… 36. Despite a change in the weather, the trip went ahead as planned. → Although……………………………………………………………………
I. Pronunciation. 1. A. sugar B. sea C. school D. salad 2. A. uncle B. uniform C. unhappy D. umbrella 3. A. put B. fun C. lunch D. much 4. A. guess B. large C. game D. give 5. A. oranges B. brushes C. catches D. kites II. Word stress. 1. A. invent B. student C. apple D. bookshop 2. A. asleep B. official C. tradition D. special 3. A. famous B. lucky C. agree D. father 4. A. festival B. holiday C. gardener D. prediction III. Choose the correct word or phrase to complete each sentence. 1. “It was a mistake to become a teacher. I wish I ………….. Architecture,” said Stephen. A. had studied B. would study C. have studied D. studied 2. Ken was the second person ………….. his mother in hospital. a. to visit B. visiting C. have visited D. visit 3. Last night, I ………….. ready to go to bed when, suddenly, I heard a noise coming from the basement. A. got B. had got C. was getting D. had been geeting 4. The candidate was unsuccessful as he had ………….. previous working experience and did not hold a postgraduate degree. A. a few B. little C. a little D. few 5. Because of the hurricane we ………….. not to leave the building under any circumstances. A. have told B. tell C. have been told D. will have told 6. We are going to have a swimming pool ………….. in our garden. A. to put B. put C. being put D. putting 7. They all agreed that Stephanie might not be perfect, but has a lot of ………….. . A. possibility B. potential C. probability D. likelihood 8. Bob was going to propose to Alexandra last night, but in the end he ………….. and decided to wait a bit longer. A. turned a blind eye B. was all ears C. broke a leg D. got cold feet 9. What meanings do you think the writer is trying to ………….. ? A. connect B. transport C. convey D. transfer 10. Although I don’t like using credit cards, they come ………….. if you run out of cash. A. in handy B. into effect C. into power D. to light 11. After a week on the yacht, Joshua was happy to be on ………….. again. A. shore B. coast C. beach D. sea 12. When the weather was nice, she liked to go for a walk in the early morning …………… A. blizzard B. mist C. downpour D. heatwave 13. The ………….. he made online cost him an arm and a leg. A. acquisition B. profit C. purchase D. damage 14. Joe Donne has been ………….. with murder and is expected to serve many years in prison. A. charged B. convicted C. blamed D. sentenced 15. My parents told me that I would have to paddle my own ………….. if I wished to pursue a career in showbiz. A. ship B. boat C. raft D. canoe
😒😒Sample literature grade 4: Describe a horse that you have the opportunity to see includes selected and good sample essays to help students strengthen their vocabulary, complete the article describing the animal - describing the horse. Prepare for the 4th grade essay writing test with high results. Invite your students to join.giúp mình
I. Circle the word of which the underlined sound is pronounced differently from the others. 1. a. ago b. flat c. man d. happy 2. a. wash b. late c. want d. quality 3. a. button b. cup c. pulp d. put 4. a. sunbathe b. product c. fun d. include II. Choose the correct answer for each sentence 1. I put my hat on ………………..protect my face from the sunlight. a. for b. in order to c. on order to 2. Lan is not ……………………to be in my class. a. very old b. old enough c. enough old 3. I ………………..do it for you. I promise. a. will b. should c. would 4. We were surprised …………………that news. a. hearing b. hear c. to hear 5. This beautiful box …………………from recycled paper. a. made b. was made c. making 6. John is interested …………………..the history of Vietnam. a. in b. on c. at 7. Do you mind ………………..these letters for me? a. send b. to send c. sending 8. Would you mind if I …………………………your bike? a. borrow b. borrowed c. to borrow 9. Paris is famous for its ……………………… a. Eiffel Tower b. Big Ben Clock c. Statue of Liberty 10. When the mail man came, my family …………………. a. sleep b. is sleeping c. was sleeping 11. Her mother ………………a lot of souvenirs while she …………….Paris. a. bought / visited b. was buying / was visiting c. was buying / visited 12. Do you know how …………….fire without using the matches? a. make b. to make c. making 13. Did your school hold a …………………contest last week? a. flower-arranging b. flower-arranged c. flower-arrange 14. Lien wanted …………………….a letter to her friend in France. a. sending b. sends c. to send 15. My son’s really afraid …………………………..dogs. a. of b. for c. with 16. I haven’t seen John ………………….he got married. a. since b. before c. by III. Rewrite the sentences. 1. They built our house two years ago. (passive) ……………………………………………………………………………………….. 2. We often buy new clothes for our children on Tet. (passive) ……………………………………………………………………………………….. 3. Nga asked me, “Do you visit the Hue Citadel?” (reported speech) ……………………………………………………………………………………….. IV. Write sentences with given words 1. Nam / play / piano / 7 o’clock / last night ……………………………………………………………………………………….. 2. they / go / HCM city / next month. ……………………………………………………………………………………….. V. Read the text then do the task below It was the first time Jim went to HCM city with his parents. When the plane landed at Tan San Nhat airport, the day was fine. There was s bright sun, and the sky was cloudless and blue. It is said that HCM city is the city of sunshine. They took a taxi to the Rex Hotel, a very big hotel in the city center. After checking in, they went upstairs to their room on the fifth floor. Jim was happy to see the sight of the city. Through the window of the bedroom, he could see the beautiful picture of the city. It was marvelous to see the city sparkling in colorful light at night. Jim visited many of the places of interest such as Nha Rong Harbour, Dam Sen Park, Suoi Tien and Saigon Water Park. HCM city is famous for shopping malls. Jim bought a lot of souvenirs for his friends at Saigon Tourist Centre. The next evening, the whole family walked along the streets, then came into a well-known vegetarian restaurant to enjoy delicious food. It was really wonderful. True false 1. …………….Their room was on the sixth floor. 2. ……………..Jim visited many places and bought a lot of souvenirs. Answer the questions: 1. Did they take a bus to the hotel from the airport? ……………………………………………………………………………………….. 2. Where could he see the beautiful picture of the city? ……………………………………………………………………………………….. 3. Where did Jim’s family have dinner?
giúp mk vt 1 câu chuyện bangừ tiếng anh nhé
việc tác giả nêu ra hàng loạt sự vật tương tự bằng những kết cấu tương tự như thế có tác dụng gì trong văn bản sống chết mặc bay
Vẽ đậu mầm ôm trái tim. - Trái tim có màu đỏ tươi và bóng. - Vẽ má hồng cho đậu mầm. - Trên trời vẽ 1 đám mây nha, nhớ tô màu đám mây là màu hồng trộn lẫn với xanh. Xấu = Bc
bộ phải cho nhiuw2 điểm thì mới giúp ngta hả trời:)))??? đã nói là hết điểm rùi mừ:(((
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