11 He asked his daughter what kind of sport were you interested in  

12 I asked the neighboor what time your husband left for work 

13) You hate watching violent films , don't you ?

14) They have just repaired the street ìn front of my house,haven't they ?

15) The first TV picture wasn't produced by Baird in 1926,did he ?

16) This kind of shoes was bought last year,didn't she 

My mom asked me how your course took

The man asked me how many students in the class were there 

26.

\(\sqrt{\dfrac{-3}{2a^3}}=\sqrt{\dfrac{-3a}{2a^4}}=\dfrac{1}{a^2}\sqrt{\dfrac{-3a}{2}}\)

Đáp án B

28.

\(\sqrt{\dfrac{a^3}{a}}=\sqrt{a^2}=\left|a\right|=-a\)

Đáp án B

Bài 1: 

a: \(=-10x^3+20x^4-5x\)

b: \(=\dfrac{1}{3}a^2b+7a^5-1\)

c: \(=a^3+8+25-a^3=33\)

d: \(=x^2-16+8-x^3=-x^3+x^2-8\)

e: \(=a^3+1+8-a^3=9\)

f: \(=\dfrac{7-2x+4x-8}{2x+3}=\dfrac{2x-1}{2x+3}\)

g: \(=\dfrac{3}{2\left(x+3\right)}-\dfrac{2}{x\left(x+3\right)}\)

\(=\dfrac{3x-4}{2x\left(x+3\right)}\)

15.\(5\sqrt{3x}-\sqrt{12x}+\sqrt{75x}-15=5\sqrt{3x}-2\sqrt{3x}+5\sqrt{3x}-15=8\sqrt{3x}-15\left(D\right)\)

\(23,\sqrt[3]{2x+1}=3\\ \Rightarrow2x+1=27\\ \Rightarrow2x=26\\ \Rightarrow x=13\left(D\right)\)

Câu 26: C

Câu 26 - C

26C       21B

III. 

A. 

1. B

2. C

3. B

4. A

5. D

B. 

1. C

2. B

3. B

4. A

5. C

1 b c b a d

2 c b b a c nha

1 The meeting was canceled 3 days ago

2 She told me she was watching a film with her sister then

3 I admire the guitarist who is perfroming on the stage

4 Had it not been for Pauline's interest, the project would have been abandoned 

IV. 

1. The meeting was canceled 3 days ago.

2. She told me shewas watching a film with her sister then

3. I admire the guitarist who is performing on the stage

4. Had it not been for Pauline's interest, the project was abandoned. (chắc thế)