$x{\left(x-1\right)}^2-x^2\left(x^2+2x+4\right)$

$\frac{22}{99}$ rút gọn bằng bao nhiêu

Writing Part 2 - Writing a story

 Your English teacher has asked you to write a story. Your story must begin with this sentence. Lucy took a deep breath and walked
out on stage.
Write your story in about 100 words.

Complete the story with your own surprising element. (3-4 sentences)

Lucy took a deep breath and walked out on
stage. Immediately, she saw hundreds of
people staring at her. Though she expected
it, she was still in shock. However, she didn't
show her fear and kept walking. She spent
days practicing just for this moment.
Suddenly,....................................................................
......................................................................................
...........................................................
Lucy realized how much she loved being on
the stage. She will be the next top model!

(giúp mình với)

Writing Part 2 - Practice

FASHION

How would you describe your fashion style? Do you think fashion is important for teenagers? Why? Write an article answering these questions and we will put it on our website!

Write your article in about 100 words
Hints:
- Fashion types: sporty, casual, street style, trendy,...
- Reasons why fashion is important:
• concern about appearance
• express personality
• be influenced by celebrities

Table manners are very different in every country. For example, when you are in England you must not lift your soup plate to your mouth. This is very impolite. But you are in Japan this is completely (1)___________. Lifting your plate to your mouth in Japan is a traditional way of drinking your soup. And also in Japan you don't have to worry about making noise when you drink it. It just shows that you really like the food! But it is not the same in Britain so you (2) _________ make noise when eating there. In Britain people don't put their hands or elbows on the table during the meal. But in Mexico, guests keeptheir hands on the table all the time. In fact, you should watch what when your hands do very carefully. In Arab countries it is (3) _______________ when you eat with your left hand so don't do it!In all the cultures it is impolite to speak when you are eating. Also, you should leave some food on your plate because it is considered impolite if you eat everything.In Ukraine you should not start eating first, you should wait for all the others to start eating with you. You also have to say "please" and "thank you" every time you ask and (4) ____________ something. If you don't like some food, don't make (5) ___________ and sounds that show this and don't say: "Yuk! I hate that!”The best way to avoid making mistakes in other countries is to watch the host and try to follow them.

1. A. usualB. normal C. simple D. regular

2. A. mustB. shouldC. shouldn't D. don't have to

3. A. impoliteB. important C. unpleasantD. unpopular

4. A. giveB. offerC. answerD. get

5. A. noisesB. mistakesC. commentsD. faces

:   Tìm các số tự nhiên n để 2n + 3 và 4n + 1 là hai số nguyên tố cùng nhau

cho 2 đường thẳng a a' và b b' cắt nhau tại O sao cho góc aOb=130 độ.

a) tính các góc a'Ob, aOb', a'Ob

b)Vẽ tia phân giác Oc của góc aOb và tia phân giác Oc' cảu góc a'Ob'. Hai tia Oc và Oc' có là 2 tia đối nhau hay không? Tại sao?

Cho hai biểu thức P(x) = $\frac{35x^2-37x+60410}{x^3-10x^2+2018x-20180}$ và Q(x) = $\frac{a}{x-10}+\frac{bx+c}{x^2+2018}$

a, Với giá trị nào của a,b P(x) = Q(x) đúng với mọi z thuộc tập xác định.

b) Tính n để T(x) = $\frac{P\left(x\right)}{\left(x-10\right)\left(x^2+2018\right)}-n^2$ chia hết cho (x - 4) .

Cảm nhận về văn bản chiều dày bức tường

Tìm n€Z lớn nhất biết
$n^{150}$<5225

Đơn giản biểu thức
(x-3) ×($x^2$+3x+9)

Cho mạch như hình vẽ, tụ có điện dung là $C={10}^{-6} \left(F\right)$, cuộn cảm có độ tự cảm là $L={10}^{-3} \left(H\right)$, điện trở là $R_2=5 \left(\Omega \right)$. Pin có suất điện động và điện trở trong lần lượt là $\mathcal{E}=12 \left(V\right), r = 1 \left(\Omega \right)$. Một điện trở thuần $R_1=6 \left(\Omega \right)$ mắc nối tiếp tụ điện. Ban đầu đóng khoá K. Sau đó mở khoá K. Tính nhiệt lượng toả ra trên $R_1$ cho đến khi dao động điện từ trong mạch tắt hẳn.

A. $0,85·{10}^{-3} \left(J\right)$

B. $1,12·{10}^{-3} \left(J\right)$

C. $1,17·{10}^{-3} \left(J\right)$

D. $2,53·{10}^{-3} \left(J\right)$

${\left(\frac{1}{2}\right)}^5{\left(\frac{1}{4}\right)}^2$