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20 tháng 1 2018

4x2+y2+2xy=4x+4y

=>(x2+2xy+y2)+3x2+y2-4x-4y=0

=> (x+y)2+3\(\left(x^2-\dfrac{4}{3}x\right)+\left(y^2-4y\right)=0\)

=> (x+y)2+3\(\left(x^2-2.\dfrac{4}{6}+\dfrac{16}{36}-\dfrac{16}{36}\right)+\left(y^2-4y+4\right)-4=0\)

=> (x+y)2+3\(\left(x-\dfrac{4}{6}\right)^2-\dfrac{4}{3}+\left(y-2\right)^2-4=0\)

=> (x+y)2+3\(\left(x-\dfrac{4}{6}\right)^2+\left(y-2\right)^2=\dfrac{16}{3}\)

 1. How many/ groups of people/ there/ your country?  A. How many groups of people are there in your country? B. How many groups of people is there in your country? C. How many groups of people are there on your country? D. How many groups of people is there of your country?2. wear/ occasions/ special/ on/ women/ Korean/ Hanbok/ usually  A. Korean women usually wear on Hanbok special occasions.   B. Korean women wear usually Hanbok on special occasions.   C. Korean women usually wear special...
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 1. How many/ groups of people/ there/ your country? 

 A. How many groups of people are there in your country?

 B. How many groups of people is there in your country?

 C. How many groups of people are there on your country?

 D. How many groups of people is there of your country?

2. wear/ occasions/ special/ on/ women/ Korean/ Hanbok/ usually

  A. Korean women usually wear on Hanbok special occasions.

  B. Korean women wear usually Hanbok on special occasions.

  C. Korean women usually wear special Hanbok on occasions.

      D. Women on Korean usually wear Hanbok special occasions.

3. Many teenagers/ addicted/ the Internet/ computer games.

A. Many teenagers are addicted to the Internet and computer games.

B. Many teenagers are addicted with the Internet and computer games.

C. Many teenagers have addicted to the Internet and computer games.

D. Many teenagers are addicted on the Internet and computer games.

4. The Giong Festival/ held/ the 6th/ the 12th/ the 4th lunar month/ several venues around Ha Noi.

A. The Giong Festival is held from the 6th to the 12th of the 4th lunar month in several venues around Ha Noi.

B. The Giong Festival was held from the 6th to the 12th of the 4th lunar month in several venues around Ha Noi.

C. The Giong Festival is held from the 6th of the 12th to the 4th lunar month in several venues around Ha Noi.

D. The Giong Festival were held from the 6th to the 12th of the 4th lunar month at several venues around Ha Noi.

5. Watching TV/ most/ popular/ leisure activity/ Britain?

     A. Is watching TV the most popular leisure activity in Britain?

     B.  Is watching TV most popular leisure activity in Britain?

     C. Is watching TV the most popular leisure activity into Britain?

     D. Does watching TV is the most popular leisure activity in Britain?

6. Children/ like/ Tet/ long holiday/ can/ also/ receive/ lucky money.

A. Children likes Tet because it’s a long holiday and, they can also receive lucky money.

B. Children like Tet because it’s a long holiday. Moreover, they can also receive lucky money.

C. Children like Tet when it’s a long holiday. However, they can also receive lucky money.

D. Children like Tet because it’s a long holiday. Therefore, they can also receive lucky money

7. If/ a/ should/ Vietnamese/ home/ bring/ invited/ to/ gift/ you/ a/ small

A. If you should bring a small gift, when you are invited to a Vietnamese home.

B. If you are invited to a home Vietnamese, you should bring a gift small.

C. If you are invited to a Vietnamese home, you should bring a small gift.

D. You are invited to a Vietnamese home If you should bring a small gift.

8.   Vietnam/ Tay/ second/ the/ largest/ the/ ethnic/ group/

A. The Tay is the second largest ethnic group in Vietnam.

B. The Tay are the second largest ethnic groups of Vietnam.

C. The Tay are second largest ethnic group in Vietnam.

D. The Tay are the second largest ethnic group in Vietnam.

9. important/ Health/ than/ money.

A. Health is more important than money

B. Health is the most important than money

C. Health is more importanter than money

D. Health are more important than money.

10. How/ spring festival/ Bai Dinh Pagoda/ last?

A. How often do the spring festival in Bai Dinh Pagoda last?

B. How long does the spring festival of Bai Dinh Pagoda last?

C. How old do the spring festival at Bai Dinh Pagoda last?

D. How does the spring festival of Bai Dinh Pagoda last?1. How many/ groups of people/ there/ your country?

 A. How many groups of people are there in your country?

 B. How many groups of people is there in your country?

 C. How many groups of people are there on your country?

 D. How many groups of people is there of your country?

2. wear/ occasions/ special/ on/ women/ Korean/ Hanbok/ usually

  A. Korean women usually wear on Hanbok special occasions.

  B. Korean women wear usually Hanbok on special occasions.

  C. Korean women usually wear special Hanbok on occasions.

      D. Women on Korean usually wear Hanbok special occasions.

3. Many teenagers/ addicted/ the Internet/ computer games.

A. Many teenagers are addicted to the Internet and computer games.

B. Many teenagers are addicted with the Internet and computer games.

C. Many teenagers have addicted to the Internet and computer games.

D. Many teenagers are addicted on the Internet and computer games.

4. The Giong Festival/ held/ the 6th/ the 12th/ the 4th lunar month/ several venues around Ha Noi.

A. The Giong Festival is held from the 6th to the 12th of the 4th lunar month in several venues around Ha Noi.

B. The Giong Festival was held from the 6th to the 12th of the 4th lunar month in several venues around Ha Noi.

C. The Giong Festival is held from the 6th of the 12th to the 4th lunar month in several venues around Ha Noi.

D. The Giong Festival were held from the 6th to the 12th of the 4th lunar month at several venues around Ha Noi.

5. Watching TV/ most/ popular/ leisure activity/ Britain?

     A. Is watching TV the most popular leisure activity in Britain?

     B.  Is watching TV most popular leisure activity in Britain?

     C. Is watching TV the most popular leisure activity into Britain?

     D. Does watching TV is the most popular leisure activity in Britain?

6. Children/ like/ Tet/ long holiday/ can/ also/ receive/ lucky money.

A. Children likes Tet because it’s a long holiday and, they can also receive lucky money.

B. Children like Tet because it’s a long holiday. Moreover, they can also receive lucky money.

C. Children like Tet when it’s a long holiday. However, they can also receive lucky money.

D. Children like Tet because it’s a long holiday. Therefore, they can also receive lucky money

7. If/ a/ should/ Vietnamese/ home/ bring/ invited/ to/ gift/ you/ a/ small

A. If you should bring a small gift, when you are invited to a Vietnamese home.

B. If you are invited to a home Vietnamese, you should bring a gift small.

C. If you are invited to a Vietnamese home, you should bring a small gift.

D. You are invited to a Vietnamese home If you should bring a small gift.

8.   Vietnam/ Tay/ second/ the/ largest/ the/ ethnic/ group/

A. The Tay is the second largest ethnic group in Vietnam.

B. The Tay are the second largest ethnic groups of Vietnam.

C. The Tay are second largest ethnic group in Vietnam.

D. The Tay are the second largest ethnic group in Vietnam.

9. important/ Health/ than/ money.

A. Health is more important than money

B. Health is the most important than money

C. Health is more importanter than money

D. Health are more important than money.

10. How/ spring festival/ Bai Dinh Pagoda/ last?

A. How often do the spring festival in Bai Dinh Pagoda last?

B. How long does the spring festival of Bai Dinh Pagoda last?

C. How old do the spring festival at Bai Dinh Pagoda last?

D. How does the spring festival of Bai Dinh Pagoda last?  

0
8 tháng 7 2021

The position with computer is very similar today. A few years ago, computers were very large and expensive. Business managers and rich people ordered them but they didn't know how to use them. In many countries, however the situation has now completely changed. A lot of people not only own microcomputers but also know how to use them.

Dịch : Vị trí với máy tính ngày nay rất giống nhau. Một vài năm trước, máy tính rất lớn và đắt tiền. Các nhà quản lý doanh nghiệp và những người giàu đã đặt hàng nhưng họ không biết cách sử dụng. Tuy nhiên, ở nhiều quốc gia, tình hình đã hoàn toàn thay đổi. Rất nhiều người không chỉ sở hữu máy vi tính mà còn biết cách sử dụng chúng.

                                                                                                                                                     # Aeri # 

8 tháng 7 2021

Vị trí với máy tính ngày nay rất giống nhau. Một vài năm trước, máy tính rất lớn và đắt tiền. Các nhà quản lý doanh nghiệp và những người giàu đã đặt hàng nhưng họ không biết cách sử dụng. Tuy nhiên, ở nhiều quốc gia, tình hình đã hoàn toàn thay đổi. Rất nhiều người không chỉ sở hữu máy tính siêu nhỏ mà còn biết cách sử dụng chúng.

8 tháng 4 2023

The three integers are  6 and -3 and -2 having a sum of and a product of 36.

4 tháng 12 2021

Var a: integer 

4 tháng 12 2021

 

Khai báo nào sau đây là hợp lệ :Var a: interger ; Var a: integer ; Var a = interger ; Var a := interger ;

 

. Viết lại câu mà nghĩa không đổi1. What is the price of a bowl of noodles?How much.............................................................................................................. 2. How many oranges do you want?How many oranges would...................................................................................... 3. This box has twelve packets of...
Đọc tiếp

. Viết lại câu mà nghĩa không đổi

1. What is the price of a bowl of noodles?

How much..............................................................................................................

2. How many oranges do you want?

How many oranges would......................................................................................

3. This box has twelve packets of tea.

There.......................................................................................................................

4. How many bananas would you like.

How many bananas do...........................................................................................

5. Bi and Fifi fly to HaNoi

Bi and Fifi travel.....................................................................................................

6. The bakery is to the left of the house

My house................................................................................................................

7. Mr. Minh has a son, Trung

Mr Minh.................................................................................................................

8. Trang is riding her bike to school

Trang is going.........................................................................................................

9. Does your school have over eigh hundred students?

Are..........................................................................................................................

10. This exercise is very difficult and I can't do it.

This excercise is too................................................................................................

1
17 tháng 1 2023

1. What is the price of a bowl of noodles?

How much...............is a bowl of noodles?...............................................................................................

2. How many oranges do you want?

How many oranges would...........you like?...........................................................................

3. This box has twelve packets of tea.

There.......are twelve packets of tea in this box................................................................................................................

4. How many bananas would you like.

How many bananas do........you want?...................................................................................

5. Bi and Fifi fly to HaNoi

Bi and Fifi travel........to Ha Noi by plane.............................................................................................

6. The bakery is to the left of the house

My house............is to the right of the bakery....................................................................................................

7. Mr. Minh has a son, Trung

Mr Minh........is Tung's father.........................................................................................................

8. Trang is riding her bike to school

Trang is going........to ride her bike to school.................................................................................................

9. Does your school have over eigh->eight hundred students?

Are............there over eight hundred students in your school?..............................................................................................................

10. This exercise is very difficult and I can't do it.

This excercise is too...................difficult for me to do.............................................................................

18 tháng 1 2023

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