Help me 40 tk
1 +1 =?
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Education is one of the most important aspects in our life, to express our humanity and our culture. To make education better, we need to build more modern school because school is the heart of education. To me, I want to build my own school - just in imagination. Firstly, my school has five floors, as tall as what we see. Of course it has elevators every floor and it has a really large dormitory for students. And It must be certified by Education Ministry that the International school which all the excellent students all over the world will have chance to learn here. I'm sure that this school will affirm our eduction as well as our students on Education of the world.
Thanks for reading!
B=1*2*3+2*3*4+3*4*5+...+(n-1)n(n+1)
4B=1*2*3*4+2*3*4*(5-1)+3*4*5*(6-2)+...+(n-1)*n*(n+1)*[(n+2)-(n-2)]
4B=1*2*3*4+2*3*4*5-1*2*3*4+3*4*5*6-2*3*4*5+...+(n-1)n(n+1)(n+2)-(n-2)(n-1)n(n+1)
4B=(n-1)n(n+1)(n+2)
B=[(n-1)n(n+1)(n+2)]:4
Nho k cho minh voi nha
Một phút suy tư bằng một năm không ngủ.
Cái ó có nghĩa là vầy : một phút suy tư bằng một năm không ngủ
Kb nha bạn!
Kb nhen!
|-1,3.x+1/2| = |-5/6+0,2.x|
TH1: -1,3.x+1/2 = -5/6+0,2.x
=> -1,3.x - 0,2.x = -5/6 - 1/2
-1,5.x = -4/3
x = -8/9
TH2: -1,3.x+1/2 = 5/6-0,2.x
=> -1,3.x + 0,2.x = 5/6-1/2
-1,1.x = 1/3
x = -10/33
KL:...
1.It's in Vinh city.It's very big
2.The scenery is beautifull and very smooth.It's don't have any animals but it have people , entertainment game and crocodile
3.They visiting scenery ,and play game
xong roi
=2
tk nha
=2
k cho tui rùi tui k lại
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