x . x = x² là bình phương của 1 số nguyên nên lớn hơn 0

=> x . x > 0

I am a student so I have a lot of holiday like: Tet holiday, summer holiday, the first of May, .......But I like Tet holiday best. Now let me tell you about my Tet holiday.

Complete the passage with the suitable words:

I have a very close friend. His name is Phong. He is eleven years old..and..... he is in grade six. He...can.... speak English . He has English .....on..... Tuesday, Thursday and Friday. He can also....play.... the piano. In his room,....there.... is a piano and some books. Every day he gets up at six. He...has..... breakfast at six thirty and goes to school at a .....quater...... to seven . He has his....classes..... from seven fifteen to eleven thirty. Then he ....come..... back home and has lunch at twelve o'clock. It's three o'clock in the afternoon now and Phong is in his room . He ....is....... doing his homework .

bai1 A>B

làm bài 1 thui tui bận rùi

Choose the letter A, B, C, D for each gap in the following sentence.

Milk bottles can be __________ after being cleaned.

A. reused

B. recycled

C. thrown away

D. broken

Look! It (Snow)................is snowing......................We are going to have a white Christmas

Câu 1 write the sentences using the words and phrases given

1: Who/bad/student/your class?

Who is the worst studend in your class?

câu 2:Rearrange words to build compelete sentences

1:you/usually/time/What/do/get/in/up/the/morning?

What time do you usually get up in the morning?

2:you/please/Can/buy/some/books/me/?

Can you buy some books for me?

Câu 2 của câu 2 hình như bn ghi thiếu, mk thêm chữ " for " rồi.

17.5+7.17-16.12

=17. ( 5 + 7 ) - 16 . 12

=17 . 12 - 16 . 12

=12 . ( 17 - 16 )

=12 . 1

=12

x25y ⋮ 2 và 5 ⇔ y = 0

Thay y = 0 ⇒ x250 chia 3 dư 1 ⇔ ( x + 2 + 5 + 0 ) : 3 dư 1

hay ( x + 7 ) : 3 dư 1

⇒ x = 0 hoặc 3

Mà x đứng đầu ⇒ x chỉ có thể bằng 3

Vậy số đó là 3250