His hair should be CUT. It is too long

1 : Manchester / the friendliest / is / in England /City

=> Manchester is the friendliest City in England

2 : Why / so hard / does she / every day / have to work?

=> Why does she have to work so hard every day?

3 : The Taj Mahal / the most beautiful building / the world / is / in

=> The Taj Mahaj is the most beautiful building in the world

4 : We / walk to / can / the supermarket

=> We can walk to the supermarket

5 : What / computers / helpful !

=> What helpful computers!

6 : How / is / T-shirt / nice / the!

=>How nice the T-shirt is!

7 : How often / write / do you / to your penpal/

=> How often do you write to your penpal?

8 : a beautiful / what / day !

=> What a beautiful day!

9 : carefully / drives / How / she!

=> How carefully she drives!

10 : an / building / amazing / What !

=> What an amazing building!

Ex2 : Mỗi câu có một lỗi sai , em hãy tìm và chữa lại cho đúng:

1 : There is two notebooks in her school bag 

=> Are

2 : He is more lazy than his sister

=> lazier

3 : What a beautiful town are!

=> Bỏ are

4 :

1 : Manchester / the friendliest / is / in England /City

2 : Why / so hard / does she / every day / have to work?

3 : The Taj Mahal / the most beautiful building / the world / is / in

4 : We / walk to / can / the supermarket

5 : What / computers / helpful !

6 : How / is / T-shirt / nice / the!

7 : How often / write / do you / to your penpal/

8 : a beautiful / what / day !

9 : carefully / drives / How / she!

10 : an / building / amazing / What !

Ex2 : Mỗi câu có một lỗi sai , em hãy tìm và chữa lại cho đúng:

1 : There is two notebooks in her school bag 

=> are

2 : He is more lazy than his sister

=> lazier

3 : What a beautiful town are!

4 : Which player is the good in the match?

=> is the good player

5 : This is the most easy exercise in the book

=> easiest

6 : She is the more intelligent student in my class

=> most

7 : How careful she drives!

=> carefully

8 : These painting is the most expensive in the room

=> this

9 : There are five member in my family

=> members

+ My sister is a doctor

Those are my sisters. They are Mai and Hoa

The film was not interesting ENOUGH for me to watch

1.Tìm lỗi sai và sửa:

 How many classroom does your school has?

=> Classrooms

2.Viết lại câu sao cho nghĩa không đổi:

 I live near my school

=> I don't live far from my school

3. Đặt câu hỏi cho phần gạch chân:

a) My mother wants a bottle of cooking oil.

=> How many bottles of cooking oil does your mother want?

b) I play fooball every afternoon after school.

=> What do you play every afternoon after school?

c) We are never late for school in winter.

=> How often are you late for school in winter?

d) He often helps her mom do the housework.

=> Who does he often help to do the housework?

e) My father drinks coffee in the morning.

=> What does your father drink in the morning?

g) Lan often help me with my homework.

=> Who often help you with your homework?

a/ 4P + 5O₂ -----> 2P₂O₅

b/ 4H₂ + Fe₃O₄ -----> 3Fe + 4H₂O

c/ 3Ca + 2H₃PO₄ ------> Ca₃(PO₄)₂ + 3H₂

1. Jane reads (read) “The Guardian' newspaper, but I read (read)'The Independent'.
2. Fred cycles (cycle) to work, but his wife goes (go) by car.
3. Jeff  buys (buy) his food in small shops, but Jane does (do) all her shopping at the supermarket.
4. Diana likes (like) Physics, Chemistry and biology; she always gets (get) good marks in her science exams.
5. Susan lives (live) in Leeds, but she works (work) in Bradford.
6. I leave (leave) work at 6 o'clock, but John finishes (finish) work at 5 o'clock.
7. Mary rides (ride) her bike to school and her father carries (carry) her books.
8. For breakfast Ann eats (eat) cereal with milk and then she has (have) some toast.
 

\(-x^2-9-6x+a^2=a^2-\left(x^2+6x+9\right)=a^2-\left(x+3\right)^2=\left(a-x-3\right)\left(a+x+3\right)\)

Đề sai nhé.

Xét \(\frac{10n^2+n-10}{n-1}=\frac{10\left(n^2-n\right)+11\left(n-1\right)+1}{n-1}=\frac{10n\left(n-1\right)+11\left(n-1\right)+1}{n-1}\)

\(=10n+11+\frac{1}{n-1}\)

Vậy để biểu thức trên chia n-1 nhận giá trị nguyên thì n-1 là ước của 1

Từ đó liệt kê ra

Đặt \(f\left(x\right)=2x^3-x^2+ab+b\)

Vì f(x) chia hết cho x²-1 nên \(f\left(x\right)=2x^3-x^2+ab+b=\left(x-1\right)\left(x+1\right).Q\left(x\right)\)

Suy ra \(f\left(1\right)=2-1+ab+b=0\Rightarrow ab+b=-1\)

\(f\left(-1\right)=-2-1+ab+b=0\Rightarrow ab+b=3\)

Suy ra hệ \(\begin{cases}ab+b=-1\\ab+b=3\end{cases}\)

=> Đề sai