tìm và sửa lỗi sai:

1.i am pleased to tell you that your application to the post of AE has been succesful

2.These factors can be conveniently categorize under three headings

3.What percentage of the city's household live in poverty ?

4.Mathematical astronomy was the great innovation of the Greeks of the 5th century BC

5.We will have to replace all the funitures that was damage in the flood

Cho biểu thức:

A=\(\dfrac{\sqrt{x}-3}{2-\sqrt{x}}-\dfrac{2\sqrt{x}-1}{1-\sqrt{x}}+\dfrac{2-x}{x-3\sqrt{x}+2}\)

a)Tìm ĐKXĐ

b)Rút gọn

Sửa lỗi sai:

1.Emily has never wanted to return to the Yukon to live because of the winters are too severe

2.it is important to wear a hat on cold days and we lose sixty percent of body heat through our head

3.When I came home,nobody was watching the television,so I turned off it

4.Don't forget to turn off all the light when you go to bed

5.I tentatively suggested that she might be happier work somewhere else

1.barack obama is the first president of the united states with (race) underground

2.they meet and shout and wave banners and applaud their ( lead)

3.they(cheer) march long distances in all weathers

3.If necessary,they are ready to fight for their (believe)

4.If trouble breaks out,they may be arrested and even (prison)

5.The damage caused by the terrible storm two days ago was (Estimate) by the government.The real figures go up every minute

Word Form:

1.They meet and shout and wave banners and applaud their (lead)

2.They (Cheer) march long distances in all weather

3.If necessary,they are ready to fight for their (believe)

4.If trouble breaks out,they may be arrested and even (prison)

5.The damage caused by the terrible storm two days ago was (estimate) by the government.The real figures go up every minute

6.They frequently (mobile) the traffic as they march through the streets

7.They cause trouble and (irritate) to pedestrians and Police

8.With the result that people become (sympathy) to their cause

9.Barack Obama is the first president of the united states with (race) background

10.For example,when we are (travel) by air we do not have the same opportunity to admire the places we pass as we do by train or car

Chia động từ

1.The committee is still in session.It(consider) what action to take next

tính:

A=\(\sqrt[3]{2\sqrt{13}+5}-\sqrt[3]{2\sqrt{13}-5}\)

TÌm GTNN:

a) A= x-\(\sqrt{x}\)

Giải phường trình:

d)\(\dfrac{25}{\sqrt{x-2}}+\dfrac{4}{\sqrt{y-3}}+\dfrac{16}{\sqrt{z-4}}=22-\sqrt{x-2}-\sqrt{y-3}-\sqrt{z-4}\)