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banyigeumsoo101
2 năm trước
cho pt: x2 -2mx +3 = 0 . tìm giá trị của m để phương trình có 2 nghiệm phân biệt x1,x2 thỏa mãn GTTĐ x1 + GTTĐ x2 =0
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Read the text and answer the following questions: (1pt) The streets are crowded with traffic. Taxis are bringing tired people from the airport and the train stations to the hotels. They hope to sleep a few hours before their busy day in the big city. Trucks are bringing fresh fruits and vegetables into the city. Ships are bringing food and fuel to the harbor. By seven o’clock in the morning, the streets are filled again with people. Millions of people live in the big city, and millions of people who work in the big city live in the suburbs, the commuters, are hurrying to get to their offices. Everyone is in a hurry. Some stop only to drink a cup of coffee. Others stop to buy the morning paper or to have breakfast. The noise of traffic gets louder. The policemen blow their whistles to stop the traffic or to hurry it along. 1. Where do taxis often take people from? __________________________________________________________________ 2. What are trucks bringing? ___________________________________________________________________ 3. Who are commuters? __________________________________________________________________ 4. What do people often do when they are in a hurry in the early morning? ____________________________________________________________________

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