Làm hộ với ạ ! Tìm x , biết : a) (2x-1)2 -25 = 0 b) 8x3-50x = 0 c) ( x- 2 )(x2+2x + 7 ) +2(x2-4) – 5 (x-2) = 0

Một số tự nhiên chia 4 dư 3, chia 17 dư 9, chia 19 dư 13. Hỏi số đó chia cho 1292 dư bao nhiêu Nhanhh giúp mình ạ

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Vẽ đậu mầm cute có chữ"Chúc Mừng" vẽ có tâm nha Nl:nhìn nè 😀

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giúpp em nhanh vớiii ạ!!!!!!!!!!!!

hoàn cảnh sáng tác và tìm biện pháp tu và nêu tác dụng bài à ơi tay mẹ

Hòa Tan muối R2CO3 bằng đ H2SO4 10% vừa đủ thu dc đ muối 13.076% . Xác định CTHH của muối

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Read the passage and choose the best answers. People need to breathe. If they don't breathe, they (1)............ die. But how to clean the air people breathe? If they breathe (2)............ air, they will have breathe problems and become (3)........... Plants and animals need clean air, too. A lot of things in our lives create harmful gases and (4)............. the air dirty like cars, motorbikes and factories. Dirty air is called polluted air. 1. * A. must B. will C. are D. is 2. * A. clean B. clear C. dirty D. pollution 3. * A. cycling B. strong C. better D. ill 4. * A. make B. get C. let D. give Choose the letter A, B, C or D to indicate the correct answer to each of the following questions. Question 5 --> 17 5. This is ____expensive dictionary I have. * A. more B. most C. the more D. the most 6. Huy ____learnt English for 5 years. * A. have B. to have C. having D. has 7. Her mother and cousins like ____aerobics to be healthy. * A. going B. doing C. playing D. watching 8. Last night, I ____my favourite food with my friends at school. * A. eat B. ate C. eaten D. did ate 9. People will ____on the moon in the future. * A. living B. live C. are live D. be live 10. It is ____to talk to Mr Wilson. * A.comfort B. comfortable C. comforted D. comfortably 11. In the future, robots will help us ______ the children . * A. look out B. look at C. look after D. look in 12. We ______ go to the concert when the rain stops. We don’t know for sure. * A. might B. would C. can D. will 13. If he ______ so hungry, he will eat that cake. * A. is B. are C.be D. are 14. We might have a ______ TV so we can watch TV programmes from space. * A. wire B. wireless C. wiring D . wires 15. In the future , I will live ______ because I like swimming. * A. in the mountain B. on the Moon C. on the ocean D. under the ground 16. ______ do you go to school? Every afternoon. * A. How much B. How often C. How many D. How 17. ______ pen is this? Can I borrow it? * A. Whose B. whom C. who D. which Choose the letter A, B, C or D to indicate the word whose underlined part is pronounced differently from that of the rest in each of the following questions. QUESTION 18-19-20 18. "OU" * A. OUr B. cOUld C. wOUld D. shOUld 19. "I" * A. lIve B. hIgh C. fInd D. prIce 20. "O" * A. sOn B. Old C. cOld D. tOld nhanh giúp mình với có 15p thôi nhanh với đúng nhé mình càm ơn