Tìm tất cả các cặp số nguyên tố (p,q) thỏa mãn p^3+ q3 +1 = p2q2

Mn làm giúp mình bài 2 với mình cần gấp, cảm ơn ạ

C =căn chung của 4- √15 D=căn chung của 8- √55 E=căn chung của 6+ √35

Bài 4: Tìm lỗi sai 1. Yesterday I meet Mr. Tan at the supermarket. He bought some cloths for the festival this morning 2. My best friend get the accident last night. He is staying at home now. 3. I often went to the library to borrow books on weekend. 4. Look! A horse runs on the street 5. He already finishes his homework. 6. My brother asks me to pick up him at the dormitory 3 hours ago 7. Where is Tony, Jane? He taking some photographs in the garden! 8. The earth was a planet. 9. We miss the bus. Now we'll have to walk. 10. Why didn’t Tom went to school this morning? Because he was sick

Dãy số tự nhiên từ 1 đến 2009 có bao nhiêu chữ số 2

Giúp mình với mình ko biết tìm D1.Mn nhớ là chưa có C1 nha nên phải chứng minh giúp mình nhé!!

Ex1: Word formation: Sue the correct form of the verb in the bracket 1.The________ have to cook rice in this contest( participate) 2. There were two________ yesterday: fire making and rice cooking ( compete) 3. The _________ of the house is very kind to us( own) 4. My __________ will call you later( assist) 5. An( orphanage) ____________ is a child whose pareants are dead 6. I'd like to live here because I have many_______ ( friendship) 7. An___________ is the person who fight for the beauty of nature( environment ) 8. Barack Obama is a famous _________( politics) 9. My mother is a __________ and a _________( reception- telephone) 10. Her older sister is a speech_______( therapy) 11. Nam was punished because he had behaved____________ toward the visitors( polite) 12. It is________ for us to finish all the assignment in such a short period of time( possibility) 13. If you continue to be _________, we won't trust you anymore.( honest) 14.She is an_________ child, I don't want my children to make friends with her. ( obedience) 15. It was ________ of her to leave her son with care.( responsibility)

Bài 2: Tìm đáp án đúng 1. Do you know Janelyn? Yes, of course, I (met/ meet/ is meeting) her every day! 2. I ( am / was / were ) very happy on my last vacation. 3. Where is Tom? Ah! he ( is playing/ plays/played) football with his friends in the garden 5. He ( doesn’t / won’t / didn’t ) come here tomorrow. 6. (When / where / What time ) did you see her ? – Yesterday morning. 7. We ( are visiting / will visit / visit / visited) Ha Long Bay last summer vacation. 8. Lan sometimes (goes / go / went / is going ) to the zoo. 9. When they (was / will be / were / are ) children, they often played with each other. 10. Yesterday, I ( am buying / going to buy / buy / bought ) many gifts for him on the trip to Ha Noi.

Khai triển : a, (2y+5)^2 b, (3x-1)^2 c, y^2 - 169 d,36x^2-25 e, (x^2+1/3)^3 f, (3y-1/2)^3 g, (2x-3y)^3

Bài 1: Chia động từ trong ngoặc: 1. Yesterday, I (go)______ to the restaurant with a client. 2. This house (stand) ______________for centuries. 3. I(see)_______________ that film several times because I like 4. I (not go) ______ to school last Sunday. 5. She (get) _________ married last year? 6. What_________ you (do) ______ last night? - I (do) ______ my homework. 7. We (do)____________ exercise at the moment. 8. Yesterday, I (get) ______ up at 6 and (have) ______ breakfast at 6.30. 9. ______ he (walk) ¬¬¬¬________to school yesterday? - No, he ___________. 10. In the future, robots (be able to)__________ understand what we say. 11. People ( speak) _________ English and French in Canada 12. They ( not do) _________their homework last night. 13. He (not smoke)___________ for two weeks. He is trying to give it up. 14. My wife and I (travel)____________to Mexico by air last summer 15. I (have)____ a little trouble with my car last week 16. She (have)___________ coffee for breakfast every morning. 17. This is my house. ~ How long________ you (live)_________ here? ~ I (live)______________ here since 1970. 18. There (be)___________ 20 rooms in my future house. 19. Be careful! The baby (sleep) ______________________. 20. Hoa could ( play) _________ piano, but now she can’t.