mk đg cần rất rất gấp mong các bn giúp cho
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1
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Đỗ Thanh Hải
CTVVIP
14 tháng 9 2021
1 knowing the answer, they told us
2 the unique handicraft, we didn't like it
3 We looked into these machines so that we could find out the method
We looked into these machines so as to find out the method
4 Jack's poverty, everyone looks up to him
5 In order to choose the best chair, Linda looked through this catalouge
6 is not as dirty as this one
7 I didn't play as successfully as Linda
8 A dog can't run as fast as a horse
A dog runs more slowly than a horse
9 No rivers in the world is as long as the Nile
10 No one in my family talks as politely as Linda
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0
PM
1
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Đỗ Thanh Hải
CTVVIP
12 tháng 9 2021
1 was arrested before the garden by the boy yesterday
2 his cats taken care of carefully by Jack everyday
3 Has the country been protected from Covid-19 successfully
4 is reported that the man is running out of money
is reported to be running out of money\
5 has been said that the thief got out of the prison
has been said to have got out of the prison
6 was thought that Mary had turned down the job
Mary was thought to have turned down the job
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1
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Đỗ Thanh Hải
CTVVIP
5 tháng 9 2021
1 is grown in many countries in the world
2 was invented by Graham bell many years ago
3 has been used for many years
4 Is English practiced by Lan everyday
5 will be taken out of the city
6 can this letter be sent by Mary 2 days ago
7 is being made from vegetables
8 must be finished before Sunday
9 hadn't been used for a long time
10 Will I be met at the airport by Jack tomorrow
12 It is thought that Maradona is.....
13 It has been believed that the job is.....
14 It was explained that this powerful.....
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Đỗ Thanh Hải
CTVVIP
11 tháng 9 2021
1 My parents go shopping twice a week
2 Hoa's house has a balcony
3 My brother usually plays badminton with his friends
4 My favorite book is Tam and Cam. What is yours?
5 There are 10 pencil cases on the table
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1
1: Ta có: \(\dfrac{1}{\sqrt{x}-1}+\dfrac{1}{\sqrt{x}+1}+1\)
\(=\dfrac{\sqrt{x}+1+\sqrt{x}-1+x-1}{\left(\sqrt{x}-1\right)\left(\sqrt{x}+1\right)}\)
\(=\dfrac{x+2\sqrt{x}-1}{x-1}\)