Cho a+b=3 , a ≤1 . cmr : C=b ³ -a ³ -6b ² -a ² +9b ≥ 0

giải giúp mình với, mình hết điểm rồi huhu

Các bạn áp dụng bài 4 chương 2 về hàm số để giúp mk làm bài này với ạ

Làm nhanh dùn iiiiiiiiiii 🌚🌚🌚🌚🌚🌚🌚🌚

I. Find the word with the different underlined sound. 1. A. come B. someone C. son D. now 2. A. classes B. misses C. glasses D. houses 3. A. looked B. watched C. washed D. needed II. Choose the correct option A, B, C or D to complete the sentences. 4. There . . . . . a big sofa and four in the living room. A. is B. are C. am D. does 5. One of the two girls, Mai is the . . . . . A. tallest B. tall C. taller D. more tall 6. My mother often cooks . . . . . at Tet. A. peach blossoms B. Chung cake C. spring rolls D. special food 7. I . . . . . to Singapore three times. A. have gone B. have been C. went D. visited 8. My brother can’t swim . . . . . he’s afraid of water. A. because B. but C. and D. so 9. When he was young, he . . . . . swim very well. He won medals and championships. A. can B. could C. was able D. will be able to 10. - A: “. . . . . is your favourite tennis player?” - B: I don’t like tennis. A. What B. Which C. Who D. Where 11. - A: “I’ve just received a scholarship.” - B: . . . . . A. Really B. Thank you C. Congratulations D. Well 12. That is . . . . . book I’ve ever read. A. the borest B. the boring C. the most bored D. the most boring 13. It’s getting light. Shall I turn . . . . . the lights to save electricity? A. off B. up C. on D. in 14. In the future, robots will help us to surf the . . . . . A. websites B. Internet C. channels D. TV programmes 15. What does 3Rs stand . . . . . ?. It’s Reduce, Reuse, Recycle. A. at B. for C. on D. by 16. A robot can do . . . . . different things from looking after a baby to building a house. A. much B. many C. few D. little 17. Look! Nam is . . . . . judo in the playground. A. dancing B. doing C. playing D. making 18. I can’t come right now. I . . . . . when I finish my homework. A. are coming B. come C. will come D. came 19. If you read more, your vocabulary will get . . . . . every day. A. good B. well C. better D. best 20. It is wrong of you to do this. This . . . . . never happen again! A. does B. would C. will D. must III. Read the following passage and put a word in each of the numbered blanks. Fansipan is the highest pick of Viet Nam, Laos and Cambodia, so it is called the “Roof of Indochina” while the local (21) . . . . . call it Huasipan. Huasipan means large tottering rock. Fansipan is 3,143 metres (22) . . . . .. It is in Lao Cai province, nine kilometres southwest of Sa Pa Town (23) . . . . . the Hoang Lien Son mountain range. Fansipan is now one of the very few ecotourist spots of Viet Nam, with about 2,024 varieties of plants and 327 types of animal and insect. Many tourists (24) . . . . . the mountain every year. If you climb the mountain from the end of February to Match, you (25) . . . . . have a chance to admire the beautiful blooming flowers in many different colours. IV. Rewrite the sentences so that it stays the same meaning. 26. It’s not good to stay up so late to watch TV. You should ……………………………………………………………………………. 27. Nobody is older than my grandmother in my family. My grandmother …………………………………………………………………….… 28. Chau is the best at English in her class. Nobody in Chau’s class……………………………..…………………………………. V. Rearrange the words to make correct sentences. 29. time/ We’re/ great/ here/having/ a/ in Cambodia!/ …………………………………………………………………………………………. 30. The/ lovely./ weather/ been/ has/ ………………………………………………………………………………………….

cần gấp ạ hứa sẽ cho 5sao và cảm ơn nhaaaa

Ở 1 loài: gen A : mắt đỏ trội hoàn toàn so với gen a : mắt trắng. Cho cá thể mắt đỏ thuần chủng AA x cá thể mắt trắng thì kết về kiểu gen, kiểu hình ở F1 và F2 như thế nào ? Từ đó có nhận xét gì về sự phân bố KH của F2 ở 2 giới tính? giúp em với ạ

Làm nhanh giúp mik vs mik cần gấp

Xin lỗi vì đăng nhiều lần nhưng mk cứ đăng là bị xóa mk cần gấp MN ơi

Vẽ mèo Jack (Tuấn) đẹp trai số 1 của thế giới . . Nhưng từ dưới lên :VV