$x^{2}$-$y^{2}$-2x-2y
=(x-y)(x+y)-(2x+2y)
=(x-y)(x+y)-2(x+y)
=(x+y)(x-y-2)
`x^2-y^2-2x-2y`
`=(x^2-y^2)+(-2x-2y)`
`=(x-y)(x+y)-2(x+y)`
`=(x+y)(x-y-2)`
(căn6-căn2/1-căn3-5/căn5).(căn5-căn2)
Giúp mk vs ạ! Câu 1phần làm đoạn văn 200 từ gấp ạ
CẦN GẤP KO DỠN CHƠI NHÉ chuyên gia giúp e vs BN NÀO SPAM HAY LM KO CHI TIẾT NHỜ MOD XÓA GIÙM Rewrite the following sentences using the words given 1) I have bought a new coat. It was made of made of leather and make in Korea. (Korean) I ................................................................................................................... coat. 2) There is a strange but modern building in my town. It is tall and painted blue. (modern) There ............................................................................................................... in my town 3) Linda's hair is curly, long and brown (has) Linda.................................................................................................................... hair. 4) Jack found the trip to Sa Pa quite exciting. (was) Jack ....................................................................................................... Sa Pa. 5) His behaviour made me annoyed . I............................................... his behaviour............................................................... 6) The boss ususlly feels exhausted after a long working day.(makes) A long................................................................................................... 7) The lenght of the beach is 20 miles.(long) The............................................................................ 8) The dress she is wearing is out of date .(old) She .............................................................................................dress. 9) Our family spent two weeks on our vacation in Austrailia last year.(week) Our family...................................................................................................last year.
Câu 43: Một vòi nước giờ thứ nhất chảy được 2/5 thể tích bể, giờ thứ hai chảy 1/3 thể tích bể, giờ thứ ba chảy nốt 280 lít nước thì bể đầy. Tính thể tích bể?
1. The government has.....measures to promote the development of the economy. A. achieved B. carried C. made D. taken 2. You can buy dairy…..in this shop. A. producers B. productivity C. production D. products 3. Miss White sang very…..at my birthday party last night. A. beautify B. beautifully C. beauty D. beautiful 4. Alice: "What shall we do this evening?" - Carol: "....." A. No problem B. Oh, that’s good! C. I went out for dinner D. Let’s go out for dinner 5. Alice wants to attend the meeting…..having said earlier that she would not. A. despite B. although C. until D. provided 6. We've wasted enough time already. We need to…..to work. A. stand in B. set off C. take off D. get down 7. We move to the countryside as we want to be close to….. A. nature B. the nature C. a nature D. natures 8. I wanted to be the first to…..the news to my parents. A. interrupt B. transmit C. drop D. break 9. Her daughter has changed…..all recognition. A. below B. beyond C. above D. over 10. When you arrived back at the hotel.....? A. did you notice what time was it B. were you noticing what time it was C. did you notice what time it was D. were you noticing what time was it 11. As Susie.....breakfast, she isn’t hungry now. A. has eaten B. ate C. eats D. was eating 12. Kim: "What.....this weekend?" - Sally: "Oh, we're going windsurfing. It's fantastic!" A. do you go B. are you going C. would you do D. are you doing 13. She didn't want to go.....she knew all her friends would be there. A. wherever B. therefore C. so that D. even though 14. If I had the map now, I.....a short-cut across the desert. A. could have taken B. take C. could take D. can take 15. Many pop lovers were excited when the pop star…..after his illness. A. dealt with B. came back C. showed off D. turned down 16. Pat: “Would you like something to eat?” - Kathy: “.....I'm not hungry now.” A. No, thanks B. No, no problem C. Yes, I would D. Yes, it is 17. I first met her two years ago when we.....at Oxford University. A. had been studying B. are studying C. were studying D. have been studying 18. David: “Could you bring me some water?” - Waiter: “.....” A. Certainly, sir B. Yes, I can C. I don't want to D. No, I can't 19. The recycling of waste paper.....save a great amount of wood pulp. A. had better B. need C. can D. dare 20. If I were you, I would advise her.....the new teaching method. A. try B. trying C. to try D. tries Mình xin cảm ơn ạ !
Làm giúp mik vs đang cần gấp ạ gửi cả hình nx nha
Giúp em phần a vs mn!!!!!!!!!! Ko đc chép mạng
Giúp mình với mình đang cần gấp
đây nhé bớt miệng lại nhé vẽ mầm
Sáng 2/6/2021, Đoàn công tác gồm 18 cán bộ y tế của Thành phố Hải Phòng lên đường chỉ viện cho tỉnh Bắc Giang chống dịch Covid-19. Ô tô chở đoàn đi từ Thành phố Hải Phòng đến Bắc Giang dài 120 km với vận tốc dự định. Thực tế trên nửa quãng đường đầu ô tô đi với vận tốc lớn hơn vận tốc dự định là 15 km/h. Trong nửa quãng đường còn lại ô tô đi với vận tốc nhỏ hơn vận tốc dự định là 10 km/h. Biết rằng ô tô đến Bắc Giang đúng thời gian đã định. Tìm vận tốc dự định của ô tô.
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