Áp dụng hằng đăngr thức về Lập phương của một tổng ta có
( 2x + 1)³ = (2x)³ + 3.(2x)².1+3.2x.1² + 1³ = 8x³ + 12x² + 6x + 1
Đáp án:
Giải thích các bước giải:
8
(2x+1)^3=(2x)^3+3(2x)^2.1+3.2x+1^2+1^3
=8x^3+12x^2+6x+1
#xin_ctlhn nha
Làm hộ mình nhé mình cho câu trả lời hay
vẽ anime happy birthday hoidap247 lưu ý : tô màu nếu đc , màu chủ đạo là màu xanh và vàng nếu không được thì tô màu khác cx đc
1. Cho tập hợp B = {0,3,6,...,2010} Tính số phần tử của B 2. Lựa chọn phương án đúng: Cho tập hợp A = {a,b,c,d}.Số tập hợp con có hai phần tử của A là: A) 3 B) 4 C) 5 D) 6 3. Tính tổng S = 2 + 4 + 6 + 8 + ... + 98 + 100 Tổng trên bằng: 4. Lựa chọn phương án đúng: Hãy so sánh các tích sau mà không tính giá trị cụ thể của từng biểu thức A = 2000 . 2000 B = 1999 . 2001 A. A > B B. A < B C. A = B
Chia các động từ sau ở dạng V-ing hoặc to V [[ 1. I can’t afford ________________ that car. It is too expensive. (BUY) 2. You should practice ________________ English everyday. (SPEAK) 3. You neglected ________________ the name of your previous employer. (MENTION) 4. You are requested not ________________ in the restaurant. (SMOKE) 5. You are all forbidden ________________ . (LEAVE) 6. Would you mind ________________ down the radio? (TURN) 7. What do you propose ________________ now? (DO) 8. We'd recommend you ________________ your flight early. (BOOK) 9. We start early ________________ getting traffic jam. (AVOID) 10. We enjoy ________________ cartoons. We have a bunch of them in our USB. (WATCH) 11. We decided ________________ that house because it was close to our kids’ schools. (BUY) 12. Uniforms encourage students ________________ confident. (BE) 13. Try to persuade him ________________ . (COME) 14. They suggest ________________ to the beach. (GO) 15. They refused ________________ extra salary. (PAY) 16. They seem ________________ clearly what they're doing. (KNOW) 17. They knew they risked ________________ when they robbed the bank. (BE ARRESTED) 18. They determined ________________ early to avoid the traffic jam. (START) 19. They are pressing us ________________ a quick decision.(MAKE) 20. They anticipate ________________ to bigger premises by the end of the year. (MOVE) 21. The train begins ________________ down near the station. (SLOW) 22. The doctor advises patients ________________ up smoking. (GIVE) 23. The bus keeps on ________________ in spite of the heavy rain. (RUN) 24. The writer clearly intends his readers ________________ with the main character. (IDENTIFY) 25. The test will involve ________________ questions about a photograph. (ANSWER) 26. The President was forced ________________ . (RESIGN) 27. The poor harvest caused prices ________________ sharply. (RISE) 28. The officer ordered them ________________. (FIRE) 29. The letter instructed him ________________ to headquarters immediately. (REPORT) 30. The law can compel fathers ________________ regular payments for their children. (MAKE) 31. The kids offered ________________ the dishes. (DO) 32. The bank strongly resisted ________________ interest rates. (CUT) 33. Thank you for reminding me ________________ the letter. (SEND) 34. She pretends ________________ my friend but she spoke ill of me behind my back. (BE) 35. She failed ________________ the the full score because she was very careless. (GET) 36. She would have hated him ________________ how her hands shook. (SEE) 37. She refused to tolerate ________________ called a liar. (BE) 38. She imagined ________________ into the office and handing in her resignation. (WALK) 39. She finally consented ________________ our questions. (ANSWER) 40. She begged him not ________________. (GO) 41. She admitted ________________ the car without insurance. (DRIVE) 42. She admits to ________________ strict with her children. (BE) 43. Please try ________________ harder, otherwise you will never be successful. (WORK) 44. Please do not hesitate ________________ me if you have any queries. (CONTACT) 45. Parents are obliged by law ________________ their children to school. (SEND) 46. My mother wants me ________________ a teacher. (BECOME) 47. My father allows me ________________ to the theater tonight. (GO) 48. My sister detested ________________ in public places. (EAT) 49. My parents taught me ________________ French food. (COOK) 50. Leave the rice ________________ for 20 minutes. (COOK)
Tính ( 3x^2 - 5xy^3). ( 3x^2+5xy^3)
cho vd về loài trai nuôi để cấy ngọc trai nhân tạo
cho mình hỏi với vẽ bán kính như thế nào để đúng số liệu vậy ạ vd vẽ bán kính bằng 3
Choose the best word to fill each blank. There is one extra word in the list. generate/crowdsourced/empowering/network/monitor/generation/collaborate/uploaded/process/data/scale/crisis The Zooniverse is the world’s largest online collection of people-powered science projects. Hundreds of thousands of people around the world (1) with professional researchers. These digital volunteers help manage large amounts of (2) which would be too much for researchers to (3) alone. In one project, volunteers watched videos from 50 cameras focused on nesting penguins. They had to (4) and record the birth of each chick. Zooniverse has collaborated in many times of (5), such as an earthquake. In Nepal, in 2015, they (6) the mapping of the disaster area by analysing thousands of images (7) from people’s mobile phones. The images helped relief organisations understand the (8) of the disaster and where help was needed. Teachers use the Zooniverse projects to (9) students' interest. Everyone can play a part in this (10) of digital humanitarians. It can be a very (11) experience.
I . Make a complex sentence from each pair of setences . Use the subordinator provided and make any necessary changes 1. Viet Nam's current labor costs are lower compared to other countries . It brings advantages to both medium and small handicraft manufacturers (since) 2. Giang got the loán from the project . Then he opened a small enterprise of ceramics (When) 3. Green Craft has a lot of difficulties. It continually works to improve its productivity, designs and samples (althought) 4.The govermentt carried out a job training programme in rural areas. The goverment wanted young people to find jobs in their own villages (so that) 5. Some heads of the businesses had problems to find markets. They have not been trained in management (for) giúp em với ạ em đang cần gấp em sẽ vote 5 sao cho mọi người ạ cảm ơn nhiều
Sắp xếp: Fossils/much more/us/tell và dịch nghĩa
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