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17 tháng 11 2019

êu \(\Delta_x'\) nha !

17 tháng 11 2019

Cho xin cái đề phát

31 tháng 8 2017

it is 0 please k for my answer thank you very much

18 tháng 3 2022

Đây Là Tiếng Anh Lớp 1

18 tháng 3 2022

Các Bạn ơi Chả Lời Câu Hỏi Này

29 tháng 12 2017

ta có hệ pt 

<=>\(\hept{\begin{cases}x^3-3x-2=y-2\\y^3-3y-2=z-2\\z^3-3z-2=2-x\end{cases}\Leftrightarrow\hept{\begin{cases}\left(x-2\right)\left(x+1\right)^2=y-2\\\left(y-2\right)\left(y+1\right)^2=z-2\\\left(z-2\right)\left(z+1\right)^2=2-x\end{cases}}}\)

nhân từng vế của 3 pt, ta có 

\(\left(x-2\right)\left(y-2\right)\left(z-2\right)\left(x+1\right)^2\left(y+1\right)^2\left(z+1\right)^2=-\left(x-2\right)\left(y-2\right)\left(z-2\right)\)

<=>\(\left(x-2\right)\left(y-2\right)\left(z-2\right)\left[\left(x+1\right)^2\left(y+1\right)^2\left(z+1\right)^2+1\right]=0\)

<=> x=2 hoặc y=2 hoặc z=2

đến đây bạn tự thay vào và giai tiếp nhé

30 tháng 12 2017

bạn làm cho ai vậy

coffee shopcomputer gamesgo for a walkhang outlisten to musicpaintplay footballsurf the Internetswimwrite poetry1. Every weekend, my sister and I go to a swimming pool near our home. We love to _____________.2. My cousin likes to _____________. You can read her poems in our school newspaper.3. There’s a nice park in our neighborhood. My family and I like to ___________there every evening.4. I have a new computer. I like to _____________.5. There’s a small _________near our school. I...
Đọc tiếp

coffee shop

computer games

go for a walk

hang out

listen to music

paint

play football

surf the Internet

swim

write poetry

1. Every weekend, my sister and I go to a swimming pool near our home. We love to _____________.
2. My cousin likes to _____________. You can read her poems in our school newspaper.
3. There’s a nice park in our neighborhood. My family and I like to ___________there every evening.
4. I have a new computer. I like to _____________.
5. There’s a small _________near our school. I often have coffee there with my classmates after class.
6. My friends and I just like to _____________together and chat. We like spending time together.
7. Do you like to ___________? I do. I like to listen to classical, pop, and rap music. Anything, really.
8. I love to exercise and play sports. I especially like to _____________with my friends.
9. __________are a lot of fun! My brother and I always play them together. I got the high score today.
10. My uncle likes to _____________pictures of animals and plants. They’re really beautiful.

1
8 tháng 9 2021

1. swim

2. write poetry

3. go for a walk

4. computer games

5. coffe shop

6. surf the Internet

7. listen to music 

8. play football

9. hang out

10. paint

k mik nha

8 tháng 11 2021

không đăng linh tinh

8 tháng 11 2021

tào lao

không có hình à bạn?

7,

\(\Leftrightarrow x=\sqrt{x+2}\left(\frac{\sqrt{x}}{1+\sqrt{1-\sqrt{x}}}\right)^2\)

\(\Leftrightarrow x=\frac{\sqrt{x+2}.x}{2-\sqrt{x}+2\sqrt{1-\sqrt{x}}}\Leftrightarrow\frac{\sqrt{x+2}}{2-\sqrt{x}+2\sqrt{1-\sqrt{x}}}=1\)

đến đây tự làm

9 tháng 9 2017

7 đề như tớ
8.  (x-1)^2 +\(x\sqrt{x-\frac{1}{x}}\)

9. \(\sqrt{1+x}+\sqrt{3-3x}=\sqrt{4x^2+1}\)