Giải các phương trình sau: a. | 3x-1|-x=2 b. 1/x-1-3x^2/x^3-1=2x/x^2+x+1 c. x+5/x^2-5x-x-5/2x^2+10x=x+25/2x^2-50 giải giúp mình với ạhh, hứa vote 5 sao

II. LUYỆN TỪ VÀ CÂU : 1. Dấu hai chấm trong trường hợp sau có tác dụng gì? Trên đường về, người cha hỏi: “Con thấy chuyến đi thế nào? ” 2. Nêu tác dụng của những dấu gạch ngang trong câu sau : - Tuyệt lắm cha ạ! – Cậu bé đáp. - Vậy con đã học được gì từ chuyến đi này ? – Người cha hỏi tiếp.

Đặt 3 câu hỏi đơn giản bằng tiếng anh cho những tình huống sau: 1. One of your friends has come back from his/her holiday. Ask her/him three questions about the holiday. 2. One of your friends has got a new Math teacher. Ask her/him three questions about the teacher. 3. One of your friends has been to the bird park. Ask her/him three questions about the park. 4. One of your friends saw a movie last night. Ask her/him three questions about the movie. 5. One of your friends is going to move to a new house. Ask his/her three questions about the new house. 6. You work in a travel agent. A visitor would like to have a package tour. Ask him/her three questions to get more information. 7. One of your friends has got a new English teacher. Ask her/him three questions about the teacher. 8. One of your friends has been to an art show. Ask her/him three questions about that show. 9. One of your friends has been to a painting competition. Ask her/him three questions about the competition. 10. One of your friends has been to a club for young people. Ask her/him three questions about that club. 11. One of your friends has been to the film club. Ask her/him three questions for more information. 12. You would like to buy some household appliances at a department store. Ask the shop assistant three questions. 13. One of your friends has moved to a new house. Ask her/him three questions about that house. 14. One of your friends has participated a wedding party. Ask her/him three questions about the party. 15. One of your friends has been invited to a conference. Ask her/him three questions for more information about that conference. 16. One of your friends has bought a new car. Ask her/him three questions about that car. 17. One of your friends has been back from a holiday in a foreign country. Ask him/her three questions about that holiday.

2.3/7+(2/9-1 3/7)-5/3:1/9 (1/2)mũ 5:3 1/8-75%(-5 1/9) Mình viết hơi khó hiểu 1 tí mọi người thông cảm

Giải phương trình 1. Cos(x+ $\frac{\pi }{3}$ ) + sin2x =0 2. $sinx^{3}$ .cosx = $\frac{1}{4}$ . $cosx^{3}$ .sinx

giúp mình bài 4 nha, mình cảm ơn nhiều ạ

giúp mình bài 2 và 3 nha, mình cảm ơn nhiều ạ

giúp mình bài 1 nha, mình cảm ơn nhiều ạ

Giúp mình với ạ Mình cảm ơn trước nha :3

Giúp mình với ạ mình cần gấp lắm mọi người cíu em với ạ