\(\dfrac{8^{14}}{4^4.64^5}=\dfrac{\left(2^3\right)^{14}}{\left(2^2\right)^4.\left(2^5\right)^5}=\dfrac{2^{42}}{2^8.2^{25}}=2^{42-\left(8+25\right)}=2^9\)

\(\dfrac{9^{10}.27^7}{81^7.3^{15}}=\dfrac{\left(3^2\right)^{10}.\left(3^3\right)^7}{\left(3^4\right)^7.3^{15}}=\dfrac{3^{20}.3^{21}}{3^{28}.3^{15}}=\dfrac{3^{20+21}}{3^{28+15}}=\dfrac{3^{41}}{3^{41}.3^2}=\dfrac{1}{3^2}=\dfrac{1}{9}\)

wow, it's so hard, i am caculating it

X= -20,384

thank you very much

Sorry,It's so long.I can't help you

Rewrite the sentence in a way that is has similar meaning to the original ones

1,Nhan is tired. He can't fly his car 

=> Nhan is so tired to fly his car

2 .I wish to have enough money because I want to buy a new house

=>I wish to buy a new house

3.i don't think this book is expensive as it is

=> this book is not as expensive as it is

4.to do this test is very difficult

=>it's difficult to do this test

5.He said something .I didn't understand

=>i didn't understand what he says

6.He likes to read very much

=> He is interested in reading 

7.the bag is very heavy.I can't carry it

=> this bag is too heavy that i can't carry it

8.We 'll go out.The rain will stop

=>when the rain will stop, we'll go out

\(a,\left[\left(-\frac{1}{2}\right)^3-\left(\frac{3}{4}\right)^3.\left(-2\right)^2\right]:\left[2.\left(-1\right)^5+\left(\frac{3}{4}\right)^2-\frac{3}{8}\right]\)

\(=\left[\left(-\frac{1}{8}\right)-\frac{27}{64}.4\right]:\left[2.\left(-1\right)+\frac{9}{16}-\frac{3}{8}\right]\)

\(=\left[\left(-\frac{1}{8}-\frac{27}{16}\right)\right]:\left[-2+\frac{9}{16}-\frac{3}{8}\right]\)

\(=\frac{-2-27}{16}:\frac{-32+9-6}{16}\)

\(=-\frac{29}{16}:\frac{-29}{16}=1\)

\(b,\left[\left(\frac{4}{3}\right)^{-2}\left(\frac{3}{2}\right)^4\right]:\left(\frac{3}{2}\right)^6\)

\(=\left(\frac{9}{16}.\frac{81}{16}\right):\frac{729}{64}\)

\(=\frac{729}{64}:\frac{729}{64}=1\)

Bài tập này là rất khó khăn và tôi không thể làm điều đó -> Bài tập này quá, .....

\(\left(\frac{2}{3}\right)^6\)NHA CÁC BN

1.She can't go to see that film, She is too young (too)

2.The girl is very clever.She can mend enough this shirt (enough)

3.I can't do this exercise.It is enough difficult

4. This shirt is too small.I can't toowear it (too) 

5.Althuogh The water is very hot. lan can drink it. (although) 

6. Because His family is very poor. He goes to school on foot (because) 

7. Huong couldn't go to school because She was very tired. (because) 

8.That man is enough old. He can't drive a car. (enough) 

9. I can't talk to you now because. I'm too busy ( too) 

10. Athough They have a lot of money. They live in a small house (although)

COMBINE THESE TWO SENTENCES INTO ONE:

1.She can't go to see that film.She is very young (too)

=> She is too young to go to see that film .

2.The girl is very clver.She can mend this shirt (enough)

=> The girl is clever enough to mend this shirt .

3.I can't do this exercise.It is too difficult(enough) 

=> It is difficult enough for me to do this exercise .

4. This shirt is too small.I can't wear it (too) 

=> This shirt is too small for me to wear ,

5. The water is very hot. lan can drink it. (although) 

=> Although the water is very hot , lan can drink it .

6. His family is very poor. He goes to school on foot (because) 

=> Because his family is very poor , he goes to school on foot .

7. Huong couldn't go to school. She was very tired. (because) 

=> Because Huong was very tired , she couldn't go to school .

8.That man is very old. He can't drive a car. (enough) 

=> That man is old enough to drive a car .

9. I can't talk to you now because. I'm very busy ( too) 

=> I am too busy to talk to you now .

10. They have a lot of money. They live in a small house (although)

=> Although they have a lot of money , they live in a small house .

1.Do you know where she live?

2. I can't read slower than you can

3. I enjoy the pleasure from reading book

5.We shouldn't litter every where 

6. I must stop making nois

7. This book has many kinds of future house

8.Winter isn't hotter than summer

1.Where dose she live ?

→ Do you know where does she live ?

2.You can't read more quickly than I can.

→ I can't read slower than you can .

3.Iget lots of pleasure from reading book

→ I enjoy the pleasure from reading book .

4.Thank you for helping me.

→ It was kind .

5.It's wrong of us t litter every where.

→ We shouldn't litter every where .

6.It's recessary for me to stop making nois

→ I must stop making noise.

7.There are many kinds of future houses in this book

→ This book has many kinds of future house .

8.Summer is hotter than winter.

→ Winter isn't hotter than summer.

pikachu tra loi dung do ^^

1. The sound is very low . We can't hear it .

=> The sound is too low for us to hear .

2. This book is very difficult . I can't read it .

=> This book is too difficult for me to read .

3. This table is very heavy . He couldn't move it .

=> This table is too heavy for me to move

4. The program is very long . They can't broadcast it .

=> The program is too long for them to broadcast

5. This soup is very hot . I can't eat it .

This soup is too hot for me to eat .

6. The food was hot . We couldn't eat it .

=> The food was too hot for us to eat .

7. He spoke is very quickly . We can't understand him .

=> He spoke is too quickly for us to understand .

8. The meeting is very important . They can't miss it .

=> The meeting is important for me to miss .

Em mới lớp 7 có gì sai mong mn sửa giúp ạ.

Học tốt

1. The sound is very low. We can't hear it.

=> The sound is too low for us to hear 

2. This book is very difficult. I can't read it.

=> This book is too difficult for me to read

3. This table is very heavy. He couldn't move it.

=> This table is too heavy for him to move

4. The program is very long. They can't broadcast it.

=> The program is too long for them to broadcast

5. This soup is very hot. I can't eat it

=> This soup is too hot for me to eat

6. The food was hot. We couldn't eat it

=> The food was too hot for us to eat

7. He spoke is very quickly. We can't understand him

=> He spoke too quickly for us to understand

8. The meeting is very important. They can't miss it.

=> The meeting is too important for them to miss

Combine each sentences into a new one, using "too+adj+for+pro/noun+to V"

1. The sound is very low. We can't hear it. >>> The sound too low for us to hear it

2. This book is very difficult. I can't read it.>> The book too difficult for me to read it

3. This table is very heavy. He couldn't move it.>> This table too heavy for him to move it

4. The program is very long. They can't broadcast it. >> The program too long for them to broadcast it

5. This soup is very hot. I can't eat it>> This soup too hot for me to eat it

6. The food was hot. We couldn't eat it.>> The food too  hot for us to eat it

7. He spoke is very quickly. We can't understand him

8. The meeting is very important. They can't miss it.