like playing soccer, don't you
goes to school late, doesn't he
can swim very well, can't you
is going to the party, isn't she
was published in Germany in 1550, wasn't it
are sold all over the world, aren't they
have been built this year, haven't they
was given a book, wasn't he 
were bought by Mrs Brown yesterday, weren't they
is used everyday, isn't it

mình làm những bài bn chưa lm nhé

9B

10A

bài 2

have repainted

bàii 3

ride - walikking

swimming

watch

2 have repainted

4 have done 

8 have stepped

9 have you ever played

7) 1 riding -walking

2 swimming

3 watching

8)

2 my mother doesn't like listening to music

5 doing more exercises makes you healthier

còn lại ok nha

chịu ???????????????????

Câu 16: A

Câu 14: C

Câu 12: A

In the age of technology, laptop is used widely. The laptop brings us a lot of benefits for our live. it is very versatile as it can do many things. firstly, it is portable. therefore, people can take it everywhere. secondly, it is economical so everyone don't have to spend too much money to buy it. besides, the laptop is a mean of entertainment. we can use it to listen to music, to chat with friends, to make video call with parents, to play games, and so on. last but not least, we can use laptop for studying. for example, the laptop can be used for researching topics on the Web or typing the assignment as well. In summary, laptop is definitely one of the greatest inventions in the world as well as the best thing in our society.

P/s: Mình nghĩ nói ngắn quá sẽ không có điểm cao lắm đâu, không cần nói quá dài hoặc quá ngắn. Chỉ cần đầy đủ ý trong bài là ok. Với lại khi nói bạn nhớ phải tự tin lên nha. FIGHTING!!!!

Bài 1:

a) (2x+5)(x-6)=2x²+5x-12x-30=2x²-7x-30

b) (2x-1)(x²-4x+3)=2x³-8x²+6x-x²+4x-3=2x³-9x²+10x-3

c) x²-2x-(x-7)(x+2)=x²-2x-x²+7x-2x+14=3x+14

d) 3x-(x+2)(x+4)=3x-x²-2x-4x-8=-x²-3x-8

Bài 2:

a) 2(x+1)=x-1

⇒2x+2=x-1

⇒2x+2-x+1=0

⇒x+3=0

⇒x=-3

b) x(x+2)-x²=1

⇒x²+2x-x²=1

⇒2x=1

⇒x=0,5

c) 3x(x-2)=(3x-1)(x-1)-5

⇒3x²-6x=3x²-x-3x+1-5

⇒3x²-6x-3x²+x+3x-1+5=0

⇒-2x+4=0

⇒-2x=-4

⇒x=2

d) 6(x-1)(x-2)-6x(x+3)=2x

⇒6(x²-x-2x+2)-6x²-18x-2x=0

⇒6x²-6x-12x+12-6x²-18x-2x=0

⇒-38x+12=0

⇒-38x=-12

⇒x=\(\dfrac{6}{19}\)

I)1.B

2.B

3.C

4.D

5.C

II)

1.B

2.D

3.B

4.B

5.A

6.B

7.tell....way.

8.C

III)

1.isn't teaching

2.drive

3.has

làm phần nào?

I

1.B 2.B 3B 4D 4.C

II.

1B 2.D 3.B 4.B 5.A 6.B 7.tell - way 8.C

III

1.isn't teaching

2.drive

3.has