Giúp mình bài này với mình đang cần gấp lắm

Các bạn ơi các bạn giải giúp mình phương trình này với ạ mình cảm ơn các bạn nhiều ạ 😍😍

2 nguời cùng làm xong 1 việc thì cần 6h nếu 1 mình ng thứ nhất làm xong thì cần 9h hỏi 1 mình người thứ 2 làm xong thì mấy giờ

Vẽ Sammy Đào chibi nhé Vẫn như thường lệ, ai đẹp thì ctlhn còn xấu thì ngược lại, sẽ bị báo cáo và payacc Không nhận bài của những ai từ 100 điểm trở xuống NL: Fan Sam và Phong chào nhau cái

I.Combine sentences, using Relative Pronouns or Adverbs: 1. Joan was planning to go to the conference. Her colleagues were waiting for him there.-> _________________________________________________________________________________ 2. A waitress served us. She was very impolite and impatient-> ________________________________________________________________________________ 3. He has written a lot of emails. He has contacted his friends all over the world via emails.-> _________________________________________________________________________________ 4. The birds have flown away. I found their nest in the tree behind my house.-> _________________________________________________________________________________ 5. Some people were arrested. They have now been releases.-> _________________________________________________________________________________ 6. He is curious about the reason. She has been sad in recent days for that reason.-> _________________________________________________________________________________ 7. We enjoy traveling to Dalat. There are a lot of places of interests there.-> _________________________________________________________________________________ 8. Many rivers and lakes around the world are polluted. This caused serious diseases to people using the river water.-> _________________________________________________________________________________ 9. We are moving to Manchester. Manchester is in the north-west.-> _________________________________________________________________________________ 10. The singer had to cancel her concert. She was recovering from flu.-> _________________________________________________________________________________ 11. She was greatly influenced by her father. She adored him.-> _________________________________________________________________________________ 12.He isn’t looking forward to the time. He will have to leave at that time.-> _________________________________________________________________________________ 13. My bike had disappeared. I left it at the gate.-> _______________________________ 14. Tom had been driving all day. He was tired and wanted to stop. -> _________________________________________________________________________________ 15. The pen is now carefully preserved. He wrote so many great novels with this pen. -> _________________________________________________________________________________

. Cho A = (5m2 – 8m2 – 9m2)(-n3 + 4n3) Với giá trị nào của m và n thì A lớn hơn hoặc bằng 0

PHÂN TÍCH THÀNH NHÂN TỬ ( SỬ DỤNG PHƯƠNG PHÁP THÊM BỚT CÙNG 1 HẠNG TỬ ) a ) x^8 + x^7 + 1 b ) x^8 + x^4 +1 c ) x^5 +x +1 d ) x^3 + x^2 +4 HƯỚNG DẪN : Hạng tử cần thêm bớt : a ) x² + x b ) x² c ) x² d ) x² LÀM NHƯ HƯỚNG DẪN NHÁ

giúp mik vs mik cần gấp!!!!!!!!!!!!!!!

nhanh nhé mik cần gấp ak trước 15h 50 nhé

giải thích tại sao giá trị tuyêt đối của x lại bằng -x nếu x <0