các bạn giúp mình làm câu 2 nhé! cảm ơn!
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1: \(a-b-x\left(a-b\right)=\left(a-b\right)\left(1-x\right)\)
2: \(\left(a+3b\right)^2-9b^2\)
\(=a\left(a+6b\right)\)
x + 3 + 9 chia hết x + 3
9 chia hết x + 3
x + 3 thuộc Ư ( 9 )
mà Ư (9) = ( 1,3,9 )
hay x + 3 thuộc ( 1,3,9 )
ta có bảng
x + 3 1 3 9
x -2 0 6
ĐG Loại TM TM
Vậy x thuộc ( 0 , 6 )
Me: What are you doing on Sunday afternoon?
Friend: I’m not doing anything. / Nothing much.
Me: Do you want to see a movie with me?
Friend: Sure. What movie is it?
Me: It's "The Journey to Mars".
Friend: What time does it start?
Me: It starts at 4 p.m.
Friend: Great! See you then.
Me: What are you doing on Saturday morning?
Friend: I’m free.
Me: Would you like to go to the movies with me?
Friend: Sounds good. What movie do you want to watch?
Me: How about "The Forest Book"?
Friend: What time is it on?
Me: It's at 10 a.m.
Friend: OK, let's meet at the cinema at 9:45.
1, Quá khứ tiếp diễn
-Form: S+was/were+V-ing+........
-Signal(trong đề): At this time, while
2, Used to V(infinitive): Đã thường từng
3, -Có dấu hiệu của Thì Hiện Tại Tiếp diễn: Be quiet!
-Form: S+is/am/are+V-ing+..............
4, Because of+ V-ing/N, Mệnh đề
5, Đại từ quan hệ whose thay thế cho tính từ sở hữu
6, Make a lot of: Tạo rất nhiều sự nỗ lực
7, Surprise at: Ngạc nhiên với
8, Ask+O+to V: yêu cầu ai đó làm gì
9, A little đi với N không đếm được
10, in*sửa hộ mình nhé*
In đi với trạng từ chỉ thế kỉ
1 create $\rightarrow$ c. energy (tạo ra năng lượng)
2 drive $\rightarrow$ a. machinery (vận hành máy móc)
3 generate $\rightarrow$ e. electricity (phát/tạo ra điện)
4 turn $\rightarrow$ b. turbines (quay tua-bin)
5 heat $\rightarrow$ d. houses (sưởi ấm nhà cửa)
b
1 How many types of energy sources are mentioned in the text? What are they?
$\rightarrow$ Two types of energy sources are mentioned. They are renewable and non-renewable energy sources. (hoặc kể tên cụ thể: fossil fuels/coal/oil, hydro power, nuclear power, wind power, solar power)
2 What are the disadvantages of hydro and nuclear power?
$\rightarrow$ Hydro power is expensive to build dams, and nuclear power can be very dangerous.
3 Why do you think the wind and the sun are called alternative sources of energy?
$\rightarrow$ Because they are clean, renewable, and can be used instead of non-renewable sources (fossil fuels).
4 What types of energy does Viet Nam use most?
$\rightarrow$ Viet Nam uses hydro power and fossil fuels (coal, gas, oil) most.
5 What does the professor think Viet Nam will use more in the future?
$\rightarrow$ He thinks Viet Nam will use more renewable energy sources like solar and wind power in the future.






