BÀI 1

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3.d

4.d

hello,my name is..........i'm from class .........everyone alway have there own sport and even me. i very love to play football. it need 22 player,it 90minutes last. i often play football at the schoolyard. do you love football? thank you for listen to me

There are many friends who like to play soccer, volleyball, badminton. I personally like to play basketball. I started playing this sport when I was 10 years old. Back then, because I was too small, my dad made a basket to match my height. Playing basketball helps you to develop a remarkable height. Now I’m the tallest person in the class. To play basketball you need practice to have a supple body and good judgment. You also need to combine smoothly with the other players on the team in a very good way. In football, people try to get the ball into the opponent’s goal, and in basketball we try to put the ball into the opponent’s basket. This process is extremely demanding and requires a lot of effort. I usually play basketball during recess or after school with my team. I love to play basketball but I only play it for fitness and entertainment purposes. In addition to the above benefits, basketball also gives me very close friends. I love basketball.

Thank you for listen to me !

My name is Treng. I am 15 years old. At school, I enjoyed playing volleyball. This is a sport that helps me exercise. When I was a child I enjoyed watching volleyball programs. When I was 12 years old, my mother sent me to learn to play volleyball. I like it very much. I play volleyball most of my free time. I often play volleyball at school and on the volleyball court close to home. We formed volleyball clubs and teams to compete with each other. Thanks to volleyball, I met and made many new friends. I can also practice solidarity when I play any sport. I really like volleyball. I wish I could become a professional volleyball player.

sai đề hay sao ý bn

Số tuổi của bà là: (80+66):2=73(tuổi)

Số tuổi của cháu là: 73-66=7(tuổi)

tham khảo :

1. 

Đặc điểm địa hình Việt nam:

+ Địa hình đồng bằng và đồi núi thấp (dưới 1000m) chiếm tới 85% trên toàn diện tích lãnh thổ, còn địa hình trắc trở và đồi núi cao (trên 2000m) chỉ chiếm 1%. + Dãy núi cao nhất nước ta là dãy Hoàng Liên Sơn với đỉnh Phan – xi – pang cao 3143m.

2.

 – Khí hậu: nhiệt đới gió mùa ẩm, nóng ẩm, mưa nhiều.
– Địa hình: có vỏ phong hóa dày và quá trình phong hóa mạnh mẽ.
– Đất: feralit là loại đất chính ở vùng đồi núi nước ta.
– Sông ngòi: mạng lưới sông ngòi dày đặc; nhiều nước, giàu phù sa; chế độ nước theo mùa.

9)Ta có: \(\sqrt{x^2-6x+9}=5\)

\(\Leftrightarrow\sqrt{\left(x-3\right)^2}=5\)

\(\Leftrightarrow\left|x-3\right|=5\)

\(\Leftrightarrow\left[{}\begin{matrix}x-3=5\\x-3=-5\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=8\\x=-2\end{matrix}\right.\)

Vậy: S={8;-2}

19) Ta có: \(\sqrt[3]{x^3+9x^2}=x+3\)

\(\Leftrightarrow x^3+9x^2=\left(x+3\right)^3\)

\(\Leftrightarrow x^3+9x^2=x^3+9x^2+27x+27\)

\(\Leftrightarrow27x=-27\)

hay x=-1

Vậy: S={-1}

Tự làm=)))😘😘😘😘😘😁

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