PTBD là gì hả bạn

phương thức biểu đạt đó bn

1. We (have)have many major problems while working on this project.
2. She (graduate)graduated from university less than three years ago. She (work) for three different companies so far.
3. Mary (love)loves chocolate since she was a little girl.
4. DidYou (sleep) sleep well last night?
5. Mary (not.)doesn't  rock music.
7. We have been waiting here for over half an hour and nobody (take) has taken our order yet.
8. My mother used to (play) playing football well .
9. The waitress probaly thinks we already (order)orderes.
10. Matt and sarah (have)have had some differnces in their relationship lately.

đi bạn nhé

1.are

2.is singing

3.have became

4.is working

5.isn't master

6.have had

7.talks

1. There (be) are many earthquakes in California.
2. The man (sing) is singing my song now.
3. Japanese (become) have becom one of the most popular courses at the university since the Asian studies program was established.
4. Scientists (work) is working hard on it now.
5. Susan (not/master) isn'master Japanese, but she can communicate.
6. I (have) have had  four quizzes and five tests so far this semester.
7. She (talk) talks to several specialists about her problem, but nobody knows why she is sick.

Bạn nhấn vô ''Câu hỏi tương tự'' để tham khảo đáp án nhé.

8,7333... \(\simeq\)8,7

# Học tốt:))

\(8,7333....\approx8,7\)

~ học tốt~

cho \(\frac{a}{c}=\frac{c}{b}\)   vào đề bài nữa mới đúng đề bạn ạ

- x ? where ?

- Sửa lại đề như này ha: Cho \(\frac{a}{c}=\frac{c}{b}\) CMR: \(\frac{b^2-a^2}{a^2+c^2}=\frac{b-a}{a}\)

Ta có \(\frac{a}{c}=\frac{c}{b}\Rightarrow ab=c^2\)

\(\Rightarrow\frac{b^2-a^2}{a^2+c^2}=\frac{b^2+ab-ab-a^2}{a^2+ab}=\frac{\left(b^2+ab\right)-\left(ab+a^2\right)}{a^2+ab}\)

\(=\frac{b\left(a+b\right)-a\left(a+b\right)}{a\left(a+b\right)}=\frac{\left(b-a\right)\left(a+b\right)}{a\left(a+b\right)}=\frac{b-a}{a}\left(ĐPCM\right)\)

C1 :biểu cảm

C2: Tình yêu đối với sự vất vả ,nhọc nhằn