1) Thực hiên phép tính
a)(\(x\)2-2\(x\)+3)(1\(x\)-5)
b)(\(x\)2-2\(x\)\(y\)+\(y\)2)(\(x\)-\(y\))
c)(\(\dfrac{1}{2}\)\(x\)+\(y\))(\(\dfrac{1}{2}\)\(x\)+\(y\))
d)(\(x\)-\(\dfrac{1}{2}\)\(y\))(\(x\)-\(\dfrac{1}{2}\)\(y\))
2) Tính giá trị của biểu thức
a) \(x\)(\(x\)-\(y\))+\(y\)(\(x\)+y) tại \(x\)=6;\(y\)=3
2:
a: Đặt A=\(x\left(x-y\right)+y\left(x+y\right)\)
\(=x^2-xy+xy+y^2=x^2+y^2\)
Khi x=6 và y=3 thì \(A=6^2+3^2=36+9=45\)
Bài 1:
a: \(\left(x^2-2x+3\right)\left(x-5\right)\)
\(=x^3-5x^2-2x^2+10x+3x-15\)
\(=x^3-7x^2+13x-15\)
b: \(\left(x^2-2xy+y^2\right)\left(x-y\right)\)
\(=x^3-x^2y-2x^2y+2xy^2+xy^2-y^3\)
\(=x^3-3x^2y+3xy^2-y^3\)
c: \(\left(\dfrac{1}{2}x+y\right)\left(\dfrac{1}{2}x+y\right)\)
\(=\dfrac{1}{4}x^2+\dfrac{1}{2}xy+\dfrac{1}{2}xy+y^2\)
\(=\dfrac{1}{4}x^2+xy+y^2\)
d: \(\left(x-\dfrac{1}{2}y\right)\left(x-\dfrac{1}{2}y\right)=x^2-\dfrac{1}{2}xy-\dfrac{1}{2}xy+\dfrac{1}{4}y^2\)
\(=x^2-xy+\dfrac{1}{4}y^2\)
II.. Complete each of the following sentences so that it means the same as the sentence before i.t
She doesn’t live in London because she doesn’t know anyone there
Có nhiều cách viết lắm á, bạn muốn viết theo dạng nào
Anh/chị tham khảo ạ :)
rì com men cho anh/chị web " writing9.com " nha, em thấy web này có nhiều bài ielts hay, có thể tham khảo ý tưởng, với lại trong đó cũng có chấm điểm nữa, nếu mình làm bài xong muốn check grammar hay là band điểm thì nộp gòi máy chấm=)) siu chi tiết ạ... Ngoài ra thì có thể lựa chọn xem các bài có band cao, tùy trình độ mỗi người, nhưng mà em nghĩ thì nên xem mấy bài từ 6.5 - 8.0 để mở rộng vốn từ vựng của mình nhé!!
Không thì em thấy web " ielts69.com " cũng oke lắm í, tại em từng test thử bài của mình trong này roài, kk
2. Such was the demand for the tickets that people queued day and night. GREAT
The demand
The demand for the tickets was so great that people queued day and night.
The demand for the tickets was so great that people queued day and night
4.She has rarely traveled more than fifty miles from her village.
Rarely………………………………………………………………………
5.They little suspected that the musical was going to be a runaway success.
Little………………………………………………………………………
6. If the Government were forced into another election, it would be the favourite to win.
Were…………………………………………………………………………
7. If you should wish to make an appointment to see Dr Simons, she is available between 9.00 and 11.00.
Should………………………………………………………………………
8. If you had given it on time, you would have got a high mark.
Had…………………………………………………………………………
9.If it hadn’t been for Henry,I might not have met you.
Had……………………………………………………………………………
10. His brother had rarely been more excited.
"Rarely_________________________________________________________
11. If you do happen to see Helen, could you ask her to call me?
"Should________________________________________________________
12. The snowfall was so heavy that all the trains had to be cancelled.
" So ___________________________________________________________
13. If the government raised interest rates. They would lose the election.
"Were__________________________________________________________
14. There was so much uncertainty that the financial markets remained closed.
"Such__________________________________________________________
4. Rarely has she traveled more than fifty miles from her village.
5. Little did they suspect that the musical was going to be a runaway success.
6. If the Government was forced into another election, it would be the favorite to win.
7. Should you wish to make an appointment to see Dr. Simons, she is available between 9:00 and 11:00?
8. Had you given it on time, you would have got a high mark.
9. Had it not been for Henry, I might not have met you.
10. Rarely had his brother been more excited.
11. Should you happen to see Helen, could you ask her to call me?
12. So heavy was the snowfall that all the trains had to be canceled.
13. Were the government to raise interest rates, they would lose the election.
14. Such was the uncertainty that the financial markets remained closed.
4.She has rarely traveled more than fifty miles from her village.
Rarely………………………has she traveled more than fifty miles from her village.……………………………………………
5.They little suspected that the musical was going to be a runaway success.
Little……………did they suspect that the musical was going to be a runaway success.…………………………………………………………
6. If the Government were forced into another election, it would be the favourite to win.
Were…………………the Government forced into another election, it would be the favourite to win.………………………………………………………
7. If you should wish to make an appointment to see Dr Simons, she is available between 9.00 and 11.00.
Should…………………you wish to make an appointment to see Dr Simons, she is available between 9.00 and 11.00.……………………………………………………
8. If you had given it on time, you would have got a high mark.
Had……………………you given it on time, you would have got a high mark.……………………………………………………
9.If it hadn’t been for Henry,I might not have met you.
Had…………………it not been for Henry, I might not have met you.…………………………………………………………
10. His brother had rarely been more excited.
"Rarely__________________had his brother been more excited._______________________________________
11. If you do happen to see Helen, could you ask her to call me?
"Should_____________you happen to see Helen, could you ask her to call me?___________________________________________
12. The snowfall was so heavy that all the trains had to be cancelled.
" So _____________heavy was the snowfall that all the trains had to be cancelled.______________________________________________
13. If the government raised interest rates. They would lose the election.
"Were____________________the government to raise interest rates, they would lose the election.______________________________________
14. There was so much uncertainty that the financial markets remained closed.
"Such____________________uncertainty was there that the financial markets remained closed.______________________________________
#\(yGLinh\)
4.She has rarely traveled more than fifty miles from her village.
Rarely……has she traveled more than fifty miles from her village…………………………………………………………………
5.They little suspected that the musical was going to be a runaway success.
Little……did they suspect that the musical was going to be a runaway success…………………………………………………………………
6. If the Government were forced into another election, it would be the favourite to win.
Were…the Government to be forced into another election, it would be the favourite to win………………………………………………………………………
7. If you should wish to make an appointment to see Dr Simons, she is available between 9.00 and 11.00.
Should……you wish to make an appointment to see Dr Simons, she is available between 9.00 and 11.00…………………………………………………………………
8. If you had given it on time, you would have got a high mark.
Had……you given it on time, you would have got a high mark……………………………………………………………………
9.If it hadn’t been for Henry,I might not have met you.
Had……it not been for Henry, I might not have met you………………………………………………………………………
10. His brother had rarely been more excited.
"Rarely____had his brother been more excited_____________________________________________________
11. If you do happen to see Helen, could you ask her to call me?
"Should____you do happen to see Helen, could you ask her to call me?____________________________________________________
12. The snowfall was so heavy that all the trains had to be cancelled.
" So ____heavy was the snowfall that all the trains had to be cancelled_______________________________________________________
13. If the government raised interest rates. They would lose the election.
"Were_____the government to raise interest rates, they would lose the election_____________________________________________________
14. There was so much uncertainty that the financial markets remained closed.
"Such____was the uncertainty that the financial markets remained closed______________________________________________________
Task 4. Điền trợ động từ để câu mang nghĩa phủ định. (don’t / doesn’t)
1. I ………. like tea.
2. He ………. play football in the afternoon.
3. You ………. go to bed at midnight.
4. They……….do homework on weekends.
5. The bus ……….arrive at 8.30 a.m.
6. My brother ……….finish work at 8 p.m.
7. Our friends ………. live in a big house.
8. The cat ………. like me.
cứu mình với!!
1 don't
2 doesn't
3 don't
4 don't
5 doesn't
6 doesn't
7 don't
8 doesn't
#\(yGLinh\)
1 don't
2 doesn't
3 don't
4 don't
5 doesn't
6 doesn't
7 don't
8 doesn't
Giúp mình với mình cần gấp trong chiều/tối nay á 
giúp em với ạ, em cảm ơn ạ
MỌI NGƯỜI GỬI ĐÁP ÁN CHO MÌNH TRƯỚC 12H NGÀY 30/6/2024 NHÉ Ạ! CÁM ƠN!
1 is collecting glass bottles.
2 his motorbike to work.
3 your hobby, Elena?
4 playing boardgames.
5 arranging flowers interesting.
----------------------------------
1 carve -> carving
2 not goes -> doesn't go
3 take -> took
cam -> came
4 played -> will play
------------------------
1D
Âm /ə/ còn lại âm /ɜː/
2A
Âm /ʌ/ còn lại âm /ə/
3C
Âm /ɜː/ còn lại âm /ə/
4A
Âm /ə/ còn lại âm /ɑː/
5B
Âm /ə/ còn lại âm /ɜː/
-----------------------------------
1B
Âm 2 còn lại âm 1
2C
Âm 1 còn lại âm 2
3A
Âm 1 còn lại âm 2
4C
Âm 1 còn lại âm 2
5B
Âm 2 còn lại âm 1
#\(yGLinh\)
Ex10
1 My hobby is collecting glass bottles
2 Van's brother usually rides motorbike to work
3 What is your favorite hobby, Elena?
4 Lucy doesn't like playing board games
5 My sister finds arranging flowers interesting
Ex7
1 carve => carving
2 not goes => doesn't go
3 take => took
4 played => will play
