p=\(\dfrac{x+2}{x\sqrt{x}-1}+\dfrac{\sqrt{x}+1}{x+\sqrt{x}+1}-\dfrac{\sqrt{x}+1}{x-1}\) với x ≥ 0; x≠1

\(x^2-2mx+m^2-m+1=0\)

thay m = 1 

ko trắc chắn đáp án nên hỏi

p= \(\left(\dfrac{x+2\sqrt{x}}{x-4}-\dfrac{2\sqrt{x}+1}{2x-3\sqrt{x}-2}-\dfrac{x}{\sqrt{x}-2}\right)\dfrac{x-1}{x\sqrt{x}+1}vớix\ge0;x\ne4\)

B = \(\left(\dfrac{x}{\sqrt{x}-1}+\dfrac{2x-\sqrt{x}}{\sqrt{x}-x}\right)\left(\dfrac{1}{\sqrt{x}-1}-\dfrac{1}{\sqrt{x}}\right)\)với (x>0;x\(\ne\)1)

giải chi tiết

cho hệ phương trình \(\left\{{}\begin{matrix}x+y=2\\2x+3y=m\end{matrix}\right.\). Có bao nhiêu số nguyên dương m để hệ đã cho có nghiệm duy nhất là (\(x_0;y_0\)) \(x_0+2y_0< 5\)
 

giải bài toán bằng cách lật hệ phương trình (giải chi tiết)

một mảnh vườn hình chữ nhật có chu vi  300m. Nếu chiều dài giảm đi 10m và tăng chiều rộng thêm 20m thì diện tíc hình chữ nhật mảnh vườn tăng thêm 1000\(m^2\). tính chiều dài và chiều rộng của mảnh vườn ban đầu

11. The village fair is open for (entertain) è           

      12. The teacher had a good (decide) è           

      13. Viet Nam played an (enjoy) matchè                 

      14. He ‘s always (help) to his motherè           

      15. We are faced with a difficult (choose) è           

      16. He finds history  (fascinate) è           

      17. Laos is a (develop) countryè           

      18. There is a (short) of water in this region  è           

      19. I slept (terrible) last night. è           

      20. Air (pollute) makes us unhealthy è           

1. Mary does not have any (improve) in English              

2. He has a good (know) of French literature                 

      3. The boy was (success) he lost the match                     

      4. Are there any (similar) between them?                         

      5. They lived happily despite their (poor)                         

      6. It would be (polite) to go to the party late.                  

      7. We were surprised at his (improve) in writing.           

      8. They are very (science) in their approach                   

      9. They offer a (person) service to their customers          

      10. He wants to (wide) his knowledge of computers   

15. I was too tired to eat anything.                                                          

=> I was so....

16. People believe that he is an international criminal.                            

=> He is

17. Jane plays the guitar better than I do.                                                

=> I can’t

18. I would prefer you to deliver the sofa on Saturday                          

=> I would rather

14. When did you work for that company?                                             

=> How long......?