a)
Đặt $(x-8, 2x-17) =d (d \in Z , d \neq 0)\\$
$ \Rightarrow x-8 \vdots d\\
\Rightarrow 2x- 16 \vdots d\\
\Rightarrow 2x-17 - 2x +16 \vdots d\\
\Rightarrow 1 \vdots d
\Rightarrow d= 1$
=> Phân số này tối giản với mọi ${\color{DarkOrange} x \in Z}$
1. They arrange to hold a meeting in this city
----> A meeting is arranged to be held.
2. Someone suggested making the examination easier
-----> The examination was suggested to be made easier
3. He recommended inviting only relatives
----> Only relatives were recommended inviting.
4. She was...
Hình như chị quên cho khoảng cách rồi kìaaaaa
401. This factory produced motorbikes in 2008 as in the year 2006.
A. twice as many (Gấp hai lần) B. as twice as many C. as twice many D. as many as twice
402. In many big cities, people have to up with noise, overcrowding and bad air.
A. keep...
Phần a của bạn Kiều mình nghĩ là đúng rồi đấy.
À, lần sau bạn không nên viết bài viết có nội dung quá ngắn như: ừm, vâng, dạ, ok,.... nguy cơ bị BQT nhắc nhở đấy
Bài 1: Phân tích thành nhân tử:
1) $2x^2 - 7xy + x + 3y^2 - 3y \\
2x^2 -6xy -(xy-x-3y^2+3y)\\
2x(x-3y) -(x(y-1) -3y(y-1)\\
2x(x-3y) - (y-1)(x-3y)\\
(x-3y)(2x-y+1)$
Các bài sau thì phân tích tương tự thôi, bạn chắc làm được mà nhỉ ^_^
Bài 2: Tìm x::
Bài này bạn Ngọc Đạt có làm rồi tuy nhiên...
Em sửa lại nhé .
5. People often see him leave home early
---> He is often seen leave home early. Thiếu often hả chị
6. Someone heard her sing late at light
---> she was heard by someone late at light. ( Cái này em sao á)
7. The teacher makes pupils learn by heart
---> Pupils are made learn by...
1. They would take care children better
----> Children would be taken care better.
2. If it were lighter, I would take more photos
---> More photos would be taken if it were lighter.
3. If they had operated, they would have saved his life
---> His life would have been saved if they had operated...
OSEOLA MCCARTY
As a young girl, Oseola McCarty dreamed of becoming a nurse. However, her family duty stood as a(n) ________ (1) to educational goals. McCarty left school after completing the sixth. Since her family was one of washerwomen, McCarty followed ________ (2) their footsteps. She...