CMR: x^6-x^5+x^4-x^3+x^2-x+ 3/4 >0 với mọi x

Bài 7: Điền vào chỗ trống 1. If you take my advice, you ........................ (be) happy. 2. What would you do if you ........................ (be) me? 3. If you ........................ (lend) me some books I will give them back in two weeks. 4. I ........................ (send) her a letter if I had found her address. 5. She ........................ (not/steal) the bread if she hadn't been hungry. 6. If she ........................ (come) here I will tell her about the film. 7. I will be unhappy if you ........................ (leave) me. 8. If you hadn't been so crazy you ........................ (not/buy) this expensive house. 9. If the sun ........................ (shine) I will go to the beach. 10. If I ........................ (win) the lottery I would leave my country.

Cho hình bình hành ABCD có O là trđ của đg chéo AC. CM: 3 điểm B, O, D thẳng hàng (ko hình, chỉ đề, vì trong sách ko có) Cho tứ giác ABCD có AD//BC; góc ABCD=70 độ; góc BCD=110 độ CM; tứ giác ABCD là hình bình hành

Trình bày cách tách riêng từng chất trong hỗn hợp gồm bột Sắt, bột Lưu huỳnh và muối ăn.

Write as many topic sentences as possible for the following topics (At least 3 topic sentences): Dogs make wonderful pets. Thanks ^^

Làm giúp mik bài 4,5 ik ạ Vẽ hình giúp lun ạ

Năm lớp 9 thi ielts để vào cấp 3 trường tốt rồi lowpf 11 thi nữa để vào đại học Đó có phải là một hành động khôn ngoan ko

Bài 6: Chọn đáp án đúng 1. If she …………… the lottery last year, She ………… rich now. A. have won/would be B. had won/would be C.won/would be D. wins/will be 2. If I …………… the homework last night, I…………… bonus today. A. had done/would get B. had done/would have got C. done/would get D. does/will get 3. If we had played this game yesterday, we…………… a lot of money now. A. will have B. may have C. would have had D. would have 4. If it ……………… last night, it would be cold today. A. had rained B. rained C. have rained D. was raining 5. If she …………… to me, she ……………… in trouble right now. A. had listened/would be B. had listened/would have be C. had listened/would not be D. A & B 6. If it had rained one hour ago, the streets ………… wet now. A. would have be B. will be C. be D. would be 7. If I ………………. to the beach yesterday, I would be tired today. A. have gone B. goes C. had gone D. A & B 8. If they had gone to school yesterday, they ……….. to the museum now A. would go B. will go C. could go D. A&C 9. If he had done exercise last night, he ……… soccer right now. A. will play B. can play C. plays D. could play. 10. If Nina had not gone out last week, she ……………… die now. A. will B. would C. could D. B&C

Liên/house/is/live/my/and/classmate/near/I/her/too

Nếu A+B=200 và A-B=150 thì A:B= bao nhiêu