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Tìm giá trị của m để hai pt có ít nhất một nghiệm chung `x^2` `+` `(2m-1)x` `- 10` `=0` `(1)` `3x^2 + ( 4m - 3 )x - 22 = 0` `(2)`

LÀM NHANH HỘ MIK VS! HỨA SẼ VOTE 5* I.Read the text and then choose the correct answer for each question below. Doctors may tell you that junk food is bad for your health, but McDonald's, Burger King or Pizza Hut can prove that young people don't listen to that advice! How did the hamburger become the most popular, most typical American food? The hamburger has no connection with ham. It got its name from the German town of Hamburg, which was famous for its ground steak. German immigrants to the United States introduced the ‘hamburger steak'. Then, the introduction of the bun was an important part of the answer. Another important part is McDonald's, one of the world's most famous fastfood restaurants. You can find them in Japan, Germany, Panama, Guatemala, Australia, Portugal, Hong Kong, etc. In fact, there are 13,000 in 120 countries. There's even a floating McDonald's in St. Louis, Mississippi, and another in Alaska. The first McDonald's was opened in Des Plaines, Illinois, and is now a museum. What makes American fast food so popular? Lee Cho, a South Korean, says: “I often go to McDonald's. It's clean, less expensive than other restaurants and saves time.” Natalia Petrovna, a girl from Moscow, says “I find the hamburgers very tasty and the sundaes with caramel sauce are out of this world.” Karen Smith, from Frankfurt: “McDonald's is our favourite meeting point. We can sit there and talk for hours in a friendly atmosphere. There are lots of young people around. The food is cheap and the milkshakes…yum…” Older people are very critical of this sort of food. Lots of young people in the USA are overweight, and parents blame these high-calorie foods that their children gobble up in large quantities. True or False 1. The hamburger has its origin in the United States. 2. The name ‘Hamburger' is from the word ‘ham'. 3. McDonald's can be found most of places in the world. 4. Young people love McDonald's although it's rather expensive. 5. Parents strongly disapprove of fast food. II. Read and answer PHO - A POPULAR DISH IN HA NOI Among the many special dishes in Ha Noi, pho is the most popular. It is a special kind of Vietnamese soup. We can enjoy pho for all kinds of meals during the day, from breakfast to dinner, and even for a late night snack. Pho has a very special taste. The rice noodles are made from the best variety of rice. The broth for pho bo (beef noodle soup) is made by stewing the bones of cows for a long time in a large pot. The broth for another kind of pho, pho ga (chicken noodle soup) is made by stewing chicken bones. The chicken meat served with pho ga is boneless and cut into thin slices... It's so delicious! Tell me about a popular dish where you live! 1. When can we enjoy pho? 2. What are the noodles made from? 3. How is the broth for pho bo (beef noodle soup) and pho ga (chicken noodle soup) made? 4. How is the chicken meat served with pho ga?

Phân tích đa thức thành nhân tử nhé 5*+ CTLHN NHA

Hỗn hợp A gồm Al2O3 và Fe2O3. Dẫn khí CÓ qua 21,1 gam Al và nung nóng thu được hỗn hợp A2 gồm 5 chất rần và hỗn hợp khí A3. Dân A: qua dung dịch Ca(OH)2 dư thấy có 5 gam kết tủa. Cho Aztác dụng vừa đủ với 1 lít dung dịch H2SO4 0,5M thu được dung dịch A4 và có 2,24 lít khí thoát ra (đktc). Tính % khối lượng mỗi chất trong hỗn hợp A. Giải giúp mình với

cho a,b là các số thỏa mãn điều kiện a²+b²=1.tìm GTLN của M=ab căn 3+a²

who, which, whose,.. 1. The man who she is going to marry is very rich. 2. This is the bank _______ was robbed yesterday. 3. He wore a mask _______ made him look like Mickey Mouse. 4. He arrived with a friend ______ waited outside in the car. 5. The man ______ mobile was ringing did not know what to do. 6. The car ______ the robbers escaped in was a BMW. 7. The woman _____ daughter was crying tried to calm her down. 8. The postman ______ works in the village is very old. 9. The family ______ car was stolen last week is the Smiths. 10. The cowboy ______ is wearing a red shirt looks very funny. 11. A bus is a big car ______ carries lots of people. 12. The volunteers, ______ enthusiasm was obvious, finished the work quickly. 13. Children ______ like music are often good at mathematics. 14. The engineers ______ designed the building received an award. 15. The girl ______ recited the poem is my niece. 16. The townspeople, ______ pride in their community is well- known, raised enough money to build a new town hall. 17. The Pacific Ocean, ______ might have been crossed by raft during the Stone Age, is the world’s largest ocean. 18. The newspaper to ______ we subscribe is delivered regularly.

Tìm x, biết `3(2x-1)(x+2)-2(3x+2)(x-4)= 5`

Cưu voi ai giỏi hoa giúp em a nhưng em moi là hsth cơ sở thôi đừng su dụng bt e hay ion j nha

a) Cho biết xy+1=x+y. Tính F=x^2009y^2010-x^2009-y^2010. b) Cho biết M=a^2(b+c)+b^2(c+a)+c^2(a+b)+2abc=0 và a+b+c=0. Tính N=a^2011b^2012c^2013. c) Cho biết a^3+b^3+c^3=3abc=21 và a khác b khác c. Tính M=a(b^2+c^2)+b(c^2+a^2)+c(a^+b^2)