Giúp mik bài 2 này vs hưaa cho ctlhn

a)(x-5x).(x+2)+4(x-2).(x+1)+2(x-2).(x+2)=0 b)(8x-3).(3x+2)+(4x+7).(x+4)=(2x+1).(5x-1)-33 Giúp mình với ạ

Giải dùm câu 20 với ạ mk xin cách tự luận còn bấm máy mk tính đc rồi nên không cần ạ

vẽ đồ ăn cute Y/C : có tâm , ko phạm luật NL : Hôm nay là 1 ngày tuyệt vời để ăn snack vừa ngồi chơi , yeeee !

Hòa tan hoàn toàn m gam hỗn hợp X gồm Cu và Fe3O4 trong 500 ml dung dịch H2SO4 nồng độ a mol /l (loãng ) , thu được dd Y. Cho Y tác dụng vừa đủ với dd chứa 1,6 mol NaOH, thu được 52g kết tủa . Tính giá trị của a và m

B1:Giải Pt a) 2011x(5x-1)(4x-30) b)x/2x-6 + x/2x+2 = 2x/(x-3)(x+1)

Phân tích đa thức thành nhân tử 15m ³-5m ²+7m(1-3m)

4.Are the competitors professionals or amateurs? 5.Where and when is the next Olympic Games?

1. We help him every year. =>He 2. She plays badminton in Hoang Hoa very often. => Badminton 3. They usually carve wood in the evening. => Wood 4. Mr. Mathew surfs the Webs on Sunday. => The Webs 5. These boys ride horses every Sunday.(ridden) => Horses 6. They do gymnastics every weekend to keep fit and stay healthy.(done) => Gymnastics 7.Mary has collects bottles every two weeks => Bottles 8. Bat Trang usually makes pottery.(made) => Pottery is usually 9. My parents make models for us in the evening. => Models are 10.David eats a lot of junk food.(eaten) => A lot 11. Hung washes the dishes before meals. => The dishes 12.My sister plays computer games at night. => Computer games 13.We often wear bandage before the games.(worn) => Bandage 14.Watching too much TV hurts your eyes.(hurt) =>Your eyes 15. We fire lots of calories and energy today. => A lot of calories and 16.We help homeles people very often. => Homeless people 17. Disabled people need our help. => Our help 18. He does exercise to keep fit. => Exercise 19. I do not play computer games. => Computer games 20. Elderly people do not eat junk food. => Junk food 21. They show too many advertisements on TV every days.(showed/shown) => Too many 22. They do not clean the beaches very often. => Beaches 23. We don’t look down the poor. => The poor 24. She visits Hue every year. Hue 25. They farm rice here yearly. Rice 26. Mary také a lot of mistakes each semester.(taken) A lot of 27. We donate blood dủing school year. Blood 28. He draws a mural on the wall in June.(drawn) A 29. We do not provide money for them . Money 30. People make lots of musical instrument . Lots 31. Do you show your projects every week? Are

Cho đa thức (x) = x2 + mx + 2. a) Xác định m để đa thức (x) nhận x = –2 làm một nghiệm. b) Với m tìm được ở câu a), tìm tập hợp nghiệm của đa thức (x).