Giải phương trình (x+ 1+ 1/x)^2 = (x-1-1/x)^2

Cho hình chữ nhật ABCD có DC = 20 cm, BC = 15 cm và điểm M là trung điểm của cạnh AB.Đoạn thẳng DB cắt đoạn thẳng MC tại điểm O.Tính: a)Diện tích hình thang AMCD. b)Tỉ số của diện tích tam giác DBC và diện tích hình thang AMCD c)Diện tích tam giác DOC.

Giúp em giải chi tiết bài này với ạ

Giúp Chú ý : Làm trên ảnh bằng chữ đỏ

Giúp mình với ạ, gấp lắm mn ơi, mình sẽ vote

Cho một đẩy số có số hạng đầu là 16 các số hạng sau tạo thành bằng cách viết chèn số15 bào chính giữa số hạng liền trước 16;1156;111556 CMR mọi số hạng của dãy đều là số chính phương Mọi người làm nhanh giúp mình với ạ

Hộ mik với Mong mọi người giải dễ hỉu tí

1. By the age of 25, he.....................two famous novels A. Had written B. has written C. writes D.wrote 2. After I......................lunch, I looked for my bag A. have had B. had had C.had D. was having 3.The man hot out of the car, ...........round to the back and opened the door A.walk B. walking C.walks D. walked 4.Befor you asked, the letter....................... A.has been written B. was written C. had been written D. had written 5.I ...................... in Hanoi before I moved to HCM city A.had been living B.had lived C.have lived D. have been living GIÚP MK VS

I.Give the correct form of verbs. 1. I ( be ) __________ hungry. I want ( eat ) __________ something. 2. Where she ( be ) __________ from ? - She ( be ) __________ from Viet Nam. 3. The Earth ( go ) __________ around the sun. Now,the sun ( shine ) __________ . 4. __________ ( Mary / go ) camping next Sunday ? - Yes. 5. There ( be ) __________ a little rice in the kitchen. 6. You must ( learn ) __________ harder. 7. She would like ( drink ) __________ a cup of coffee. 8. __________ ( you / write ) a letter at present? 9. My father ( not drink ) ...............................beer very often. 10.. They ( buy ) .................................a new car two months ago. 11. Nam ( help ) ...............................his father repair the radio at this time. 12. I ( be ) .....................busy last night, so I ( miss ) ..................a good film on TV. 13. She ( need ) ...................to send a postcards yesterday. 14. The girls like ( talk ) .................together at recess. 15. We ( phone ) .........................Mum and Dad last week but we ( not see ) ........them. 16. My best friend ( come ) .........................to visit me next Sunday. 17. He ………………. (go) to school on foot yesterday. .It ……………….(rain) very hard now. The sun ……………….(warm) the air and ……………….(give) us light. Look! A man ……………….(run) after the train She ……………….(go) to school everyday .They ……………….(never / work) hard before. .Let's ………….(meet) him on the corner of this street. 24. Where ……… You ……..(go) now? – I ………….(go) to the theater. 25..He ……………….(not do) morning exercises regularly. 26. …… he ………….(do) morning exercises now? 27. If it (be) ...................... nice tomorrow, we (go) ...................................... on a picnic. 28 . ...................... you ever (see) ........................ a real robot ? 29. Nam often ( watch) ………………………………. in the evening.. 30. ……you ever (see) ……………………a real robot at work ? – No, never II. Rewrite the sentences. 1. My house is bigger than your house. => Your house 2. The black car is cheaper than the red one => The red car 3. There is a sink, a tub and a shower in the bathroom. => The bathroom 4. No one in the group is taller than Trung. => Trung 5. Do you have a better refrigerator than this? => Is this 6. My house is the oldest one on the street. => No houses 7. My house has a living room, a bed room and a kitchen. => There is 8. No one can sing more beautifully than Madonna. => Madonna 9. Why don’t we go to the beach for a change? => How about 10. They live at 83 Son Tay Street. => Their_________________________________

toongr chủa 2 số là 2020 tìm 2 số biết rằng giữa chúng có 5 chữ số liên tiếp giúp nhanh nha mik cần mỗi đáp án thui