c) + 5 = 10 –
Cho các số a, b, c thỏa mãn a^10 + b^10 + c^10 = a^5×b^5 + b^5×c^5 + c^5×a^5.
Tính giá trị của biểu thức A = ( a - b - 1 )^2020 + ( b - c )^2021 + 2020.
Cho các số a, b, c thỏa mãn a^10 + b^10 + c^10 = a^5×b^5 + b^5×c^5 + c^5×a^5.
Tính giá trị của biểu thức A = ( a - b - 1 )^2020 + ( b - c )^2021 + 2020.
Tập hợp ước của 10 là:
A. {1; 2; 5}
B. {2; 4; 5; 10}
C. {1; 2; 5; 10}
D. {2; 5; 10}
Write about your city (5-10 câu)
Write about your hometown
(5-10 câu)
Write about your city (5-10 câu)
Write about your city
The living conditions in our city are getting worse and worse. We should do something before it is too late. Air pollution is a very important problem in our town. The biggest air polluters are cars. They emit very toxic fumes. To prevent pollution, governments should improve public transport, build bicycles tracks, offer to people to buy more modern and less polluting vehicles.
Water pollution is a serious problem caaused by human activities. Factories dump their garbage into the sea or rivers. We have to teach to the world that water is our life and we must save it. For example we can stop using the products of companies whose factories cause pollution and not respecting laws and so on.
There is a lot of rubbish in the streets of our town. And I think that we have to install more litter bins in the streets and parks. Government muust strictly fine people who litter up rubbish . Everybody likes picnics near the river. After picnic peoples leave a lot of plastic bottles and packing. It is very pathetic sight. We must think that we are killing ourselves. We have to say our friends not to litter because it is very bad indeed for our environment. We must think that we pollute our own air , ground and water.
Write about your hometown
My hometown is Ha Noi where is the capital of Viet Nam. Now, I am living with my parent there. Ha Noi is the most special city with many famous places as Hoan Kiem Lake, The Old Square, The Ho Chi Minh Mausoleum,…In addition, people here is very kind and friendly
I live in HN City. It's a big and noisy city. There are a lot of houses, shops and schools here. The people here are very friendly. They always busy with their work. But sometimes they are so very noisy and I don't like that. The environment is clean. Hn has specially is green bean cakes. I love my city very much because it is my home town
Write about your hometown (5-10 câu)
I was born in a quiet village where the influence of the city is not much. It is a small village with a population of about two thousand people. It is a very good place for relaxation indeed.
In my village, people live very close to each another. The people are very simple in thought and behavior. Therefore they are friendly and helpful. So, the crimes of the city are almost unknown in my village. The people work together and live in peace. I love them.
My village is surrounded by paddy-fields and a river. All these add great beauty and variety to my village scene. Although I do not like growing rice, but I really like the fields. It makes me have a good mood, a peace mood and a relaxed mood.
Now I am living in Hanoi capital. I want to come back my hometown very much. Living among such friendly and simple people, in such a quiet village, is indeed a real pleasure.
Tia có bước sóng nào nêu dưới đây là tia X ?
A. 5. 10 - 6 m. B. 5. 10 - 8 m.
C. 5. 10 - 10 m. D. 5. 10 - 12 m.
Cho tập A = {0; 2; 3; 5} và tập B = {2; 3; 4; 8; 9} và tập C = {2; 5; 7; 8; 10} Khi đó (A n B) U C là tập
A.{2; 3; 8; 9; 10} B.{3; 4; 7; 8; 10} C. {2; 3; 5; 7; 8; 10} D.{2;3;4;5;7;8; 10}Chuyển tổng các số hạng bằng nhau thành phép nhân (theo mẫu):
a) 2 + 2 + 2 = 6
b) 10 + 10 + 10 + 10 = 40
c) 9 + 9 = 18
d) 5 + 5 + 5 + 5 + 5 = 30
a) 2 + 2 + 2 = 6 b) 10 + 10 + 10 + 10 = 40
2 × 3 = 6 10 × 4 = 40
c) 9 + 9 = 18 d) 5 + 5 + 5 + 5 + 5 = 30
9 × 2 = 18 5 × 6 = 30
26/ Tìm số nguyên x, biết 10 – x = 5 – (-10)
A. x = -5 B. x = 5 C. x = 25 D. x = -10
Không tính,hay so sánh rồ điền dấu ">";"<" hoặc "=" vào chô chấm cho thích hợp:
a)795*9*100.....9*10*795
b)475*5*15........5*(10+5)*475
c)125*5*25......5*(10+5)*125
d)(a+b)+c......(c+b)+a
e)(a*b)*c......a*(b*c)
g)a*(b+c)......a*b+a*c
{[(2a+5).5+b].10+c}.10+d-2500