cho AM=3 cm sao còn hỏi AM nữa?

2)a)\(\left|2x+1\right|< \left|x-3\right|\)

\(\Leftrightarrow\left[{}\begin{matrix}2x+1< x-3\\2x+1< -x+3\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}2x-x< -1-3\\2x+x< -1+3\end{matrix}\right.\)

\(\Leftrightarrow\left[{}\begin{matrix}x< -4\\3x< 2\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x< -4\\x< \dfrac{2}{3}\end{matrix}\right.\)

Vậy S=...

địt mẹ mày bố làm sao kệ bố 

I study English so as to read in book.

Many famous places in the world I would like to visit, but Spanish is favourite place to go in my free time. Because following the reasons :

Frist of all, I will be talking about the first time I went abroad was when I went to Spanish.I will never forget that time, it was in the summer holidays about five or six year ago and I went with my friend. In Spanish , we experienced a lot of nice memories and it was clear in my memory I have found first love in my life also in this place.

The second reason that I would like to visit Spanish because there are many beautiful beaches. It is covered with sunny and wind that is good for anyone like surfing sport.When I was in here, I walked stretching along coast every day with mygirlfriend, it was really romantic. Besides that, Shopping Centre is very famous either and you can buy anything there.

The last reason, I very like football and I am a great fan of Real madrid club. Bernabeu stadium is on a large scale , architecture is both modern and antique. In additon, population very love football. The matches of Realmadrid in Bernabeu stadium have been attracting a lots of audience and football players are encouraged very excessive.

Nothing is gona change my love for Real madrid.