Số nghiệm của phương trình  trên khoảng  là:        

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  For several years, his ambition _______________ to a pilot.
  
  

• Choose the best answer for the following sentence:

  Henry ________________ into the restaurant when the writer was having dinner.
  
  

• Choose the best answer for the following sentence:

  He will take the dog out for a walk as soon as he ______________ dinner.
   

• Choose the best answer for the following sentence:

  Before you asked, the letter _______________ .
   

• Choose the best answer for the following sentence:

  I shall be glad when he __________________ .
   

• Choose the best answer for the following sentence:

  Ask her to come and see me when she _______________ her work.
   

• Choose the best answer for the following sentence:

  After you finish your work, you __________________ a break.
   

• Choose the best answer for the following sentence:

  Turn off the gas. Don’t you see the kettle __________________ ?
   

• Choose the best answer for the following sentence:

  The children are still ill but they _______________ better gradually.
   

• Choose the best answer for the following sentence:

  Don’t bother her. She ________________ her French lesson; she always __________________ 
  it in the morning.