Tìm các giá trị của tham số m để phương trình có hai nghiệm thực phân biệt.         

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  ______________________ is good news.
   

• Choose the best answer for the following sentence:

  We were surprised at _______________________ going on a trip alone.
   

• Choose the best answer for the following sentence:

  Her father is not only the town mayor, he runs ____________________, too.
   

• Choose the best answer for the following sentence:

  Do you have ___________________________ idea who could have borrowed your bicycle?
   

• Choose the best answer for the following sentence:

  The _______________________ produced at our factory in England.
   

• Choose the best answer for the following sentence:

  She put her handbag down ___________________ and now she can’t find it.

• Choose the best answer for the following sentence:

  Is _______________________ a post office near here?
   

• Choose the best answer for the following sentence:

  ____________________ countries still have a king or a queen, don’t they?
  
  

• Choose the best answer for the following sentence:

  __________________ tells me you’ve got ___________________ bad news for me.
   

• Find a mistake in the four underlined parts of the sentence and correct it:

  Maria is not a citizen of the United States, so she has to pay income taxes anyway.