Cho phương trình ẩn x $\frac{x-a}{x+a}$ -$\frac{x+a}{x-a}$ + $\frac{3a^2+a}{x^2-a^2}$ =0 a. Giải phương trình với a=-3 b. Giaỉ phương trình với A=1 c. Xác định a để phương trình có nghiệm x=0.5

Điền trợ đt I......like tea You.....go to bed at midnight The bus........arrive at 8.30a.m Our friends........live in a big house

em hiểu thế nào về từ chông chênh trong bài thơ tức cảnh pác bó

Câu1: phân tích đa thức thành nhân tử a) x^2-27+3x(x-3) b)5x^3-7x^2+10x-14 Câu 2: tìm x, biết: (X-4)(x^2+4x+16)-x(x^2-6)

Làm hộ em câu đánh dấu rồi ạ em đang cần gấp

Choose the most appropriate future form. Sometimes more than one form is possible. 1. You’ll freeze if ...................... out dressed like that. Put on a warm coat! (you’ll go / you’re going to go /you go) 2. When I retire next year, ...................... a lot of travelling around North America. (I’m doing / I do / I’m going to do) 3. A: Have you been in touch with Pat yet to say we can’t come? You said you’d do it. B: Sorry, I forgot. ...................... her know tomorrow when I see her at work. (I’m going to let / I shall let / I’ll let) 4. Look at that stupid cyclist. ...................... an accident. (He’ll cause / He’s going to cause / He causes) 5. A: What do you want done with this box? B: If you just leave it there, ...................... it upstairs when I go. (I’ll take / I’m taking / I’m going to take) 6. A: What ...................... this evening? (are you doing / are you going to do / do you do) B: Oh, I don’t know. Maybe ...................... watch a DVD. (I’m going to / I’ll / I’m watching) 7. Please note that next week’s concert ...................... at 7.00, not 7.30 as advertised in the program. (is commencing / will commence / is going to commence) 8. Mr. Kerr ...................... angry if you don’t hand your homework in today. (is being / is going to be / will be) 9. A: Bob Dylan ...................... a concert in London next month. (will do / is doing / does) B: ...................... book some tickets? (Am I going to / Will I / Shall I) 10. The air tickets ...................... around a week to reach you. (shall take / will take / are taking) 11. The French oral tests ...................... next Monday. (are starting / will start / start) 12. When Guy ...................... 50, Gemma ...................... 18. (is / will be / is going to be) (is going to be / is to be / will be) 13. If we get much more rain, the river ...................... its banks. (is probably going to burst / will probably burst / is bursting)

Viết những PTHH mà bạn viết khi cho A vào B sẽ khác khi cho B vào A Ví dụ: Cho Na2CO3 vào HCl \(ne\) cho HCl vào Na2CO3

Mik cần giải tất cả các bài đc ko ạ? Mik làm r nhg chưa chắc chắn, sáng mai mik nộp r giúp mik vs ạ

Sục v (l) khí SO2 đktc vào 1(l) dd Ca(OH)2 1M thu được 8,4 g kết tủa a) tính v so2 b) tính CM chất tan trong dd coi quá trình phản ứng ko thay đổi

Tìm phân số a/b biết : A+b = 46 b - a = 12