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12 tháng 7 2021

giống đề thi của trường minh thế 

30 tháng 3 2021

b) Cuộc găp gỡ của hai chú cháu tại Huế.

c) Hoán dụ: Ngày Huế đổ máu.

Điệp từ, điệp cấu trúc "Cái..."

So sánh "Như con chim chích"

Sử dụng các từ láy.

Nhịp thơ nhanh.

d) Lượm tuy còn nhỏ nhưng can đảm, lạc quan như một người chiến sĩ anh dũng khiến ta phải ngưỡng mộ, trân quý.

8 tháng 5 2020

My mother is a teacher ( tùy vào mẹ bạn làm nghề gì )

8 tháng 5 2020

What does your mother do?

=> My mother is a teacher.

Chúc bạn học tốt!

18 tháng 9 2021

Bài 4:

Điện trở tương đương :

\(R_{tđ}=\dfrac{U}{V}=\dfrac{12}{0,4}=30\left(\Omega\right)\)

Ta có: \(R_{tđ}=R_1+R_2\Leftrightarrow R_1=R_{tđ}-R_2=30-20=10\left(\Omega\right)\)

 

19 tháng 9 2021

Đọc lại yêu cầu giùm mình nha

Mọi người ơi giúp em chọn đáp án đúng kèm giải thích chi tiết lý do vì sao chọn giúp em với ạ! Em cảm ơn rất nhiều ạ.11. I'm grateful that you helped my brother do that work.A. Thank you for helping my brother do that work.B. Thank you about helping my brother do that work.C. Thank you because you helped me do that work.D. Thank you that you help my brother do that work12. I find it impossible not to worry about Lan.A. I can't help feeling worried about LanB. Ifeel...
Đọc tiếp

Mọi người ơi giúp em chọn đáp án đúng kèm giải thích chi tiết lý do vì sao chọn giúp em với ạ! Em cảm ơn rất nhiều ạ.

11. I'm grateful that you helped my brother do that work.
A. Thank you for helping my brother do that work.
B. Thank you about helping my brother do that work.
C. Thank you because you helped me do that work.
D. Thank you that you help my brother do that work
12. I find it impossible not to worry about Lan.
A. I can't help feeling worried about Lan
B. Ifeel worried about Lan, but I can't do anything to help
C.I can't do nothing to help Lan although I feel worried about her
D. I'm unable to worry about Lan
13. You'd better take a taxi; it was raining hard outside
A. You'd better take a taxi in case it was raining
B. She advised us to take a tad because it was raining outside
C. She gave us a lift because it was raining heavily
D. She didn't lend us any raincoats but a taxi
14. My brother and I go to that school
A. I went to that school and my brother, too
B. I went to that school and so my brother did
C. I went to that school and so did my brother
D. I went to that school and so my brother did, too
15. The meeting was put off because of pressure of time
A. There was not enough time to hold the meeting
B. People wanted to get away, so the meeting began early
C. The meeting was planned to start in a short time
D. The meeting lasted much longer than usual
16. When they arrived, the good seats were already taken
A. They didn't get good seats because they arrived too late
B. They arrived late enough to get good seats
C. They had to stand for the whole show
D. We couldn't get good seats although we arrived early
17. They would never have accepted his money if they had known his plans
A. They knew what he wanted to do, so they refused his money
B. They agreed with his wishes because they were glad to have his money
C. They didn't know his plans and never took money from him
D. They took the money be offered them without realizing
18. He could not afford to buy the car
A. He couldn't buy the car because it was too expensive
B. He bought the car because it was expensive
C. He bought the car though it was expensive
D. He had enough money but he didn't buy the car
19. Tam is not good at English and neither am I
A. Neither Tam nor I am good at English
B. Either Tam or I am good at English
C. I'm not as good at English as Tam is
D. Tam isn't good at English but I am
20. This is the first time I attend such an exciting holiday.
A. The first holiday I attended was exciting.
B. I had the first exciting holiday.
C. My attendance at the first holiday was exciting.
D. I have never attended such an exciting holiday before.

0
1 tháng 9 2017

Theo đề ta có :

\(A=\left(1+2+3+...+100\right).\left(36.333-108.111\right)^2\)

\(\Rightarrow A=\frac{\left(100+1\right)\left[\left(100-1\right):\left(2-1\right)+1\right]}{2}.\left(36.111.3-36.3.111\right)^2\)

\(\Rightarrow A=5050.0^2=0\)

2 tháng 9 2017

a) x4+x3+2x2+x+1=(x4+x3+x2)+(x2+x+1)=x2(x2+x+1)+(x2+x+1)=(x2+x+1)(x2+1)

b)a3+b3+c3-3abc=a3+3ab(a+b)+b3+c3 -(3ab(a+b)+3abc)=(a+b)3+c3-3ab(a+b+c)

=(a+b+c)((a+b)2-(a+b)c+c2)-3ab(a+b+c)=(a+b+c)(a2+2ab+b2-ac-ab+c2-3ab)=(a+b+c)(a2+b2+c2-ab-ac-bc)

c)Đặt x-y=a;y-z=b;z-x=c

a+b+c=x-y-z+z-x=o

đưa về như bài b

d)nhóm 2 hạng tử đầu lại và 2hangj tử sau lại để 2 hạng tử sau ở trong ngoặc sau đó áp dụng hằng đẳng thức dề tính sau đó dặt nhân tử chung

e)x2(y-z)+y2(z-x)+z2(x-y)=x2(y-z)-y2((y-z)+(x-y))+z2(x-y)

=x2(y-z)-y2(y-z)-y2(x-y)+z2(x-y)=(y-z)(x2-y2)-(x-y)(y2-z2)=(y-z)(x2-2y2+xy+xz+yz)

20 tháng 1 2020

\(\Leftrightarrow\) x-96+12 = 34-x

\(\Leftrightarrow\)  x-84       =34-x

\(\Leftrightarrow\)             2x=118

                \(\Rightarrow\) x=59

Vậy x=59

25 tháng 12 2020

là (2005 mũ n)+1 hay 2005 mũ (n+1) vậy bạn

28 tháng 12 2020

(2005n+1)

9 tháng 2 2022

1234+1200 =2434

1234+1200=2434

HT