45

Tổng của chiều dài và chiều rộng là:

        36 : 2 = 18 (cm)

Chiều rộng là:

        18 : (2 + 1) = 6 (cm)

Chiều dài là:

         6 . 2 = 12 (cm)

                 Đ/S:

1. more hardly -> harder

2. most older -> oldest

3. much -> more

4. more colder -> colder

5. to -> than

6. fluent -> more fluently

7. more low -> lower

8. more better -> better

9.  as -> than

10. more -> most

x² - 2xy - xz + yz + y² 

= (x² - 2xy + y²) - (xz - yz)

= (x - y)² - z . (x - y)

= (x - y)(x - y - z) 

Refer:

Atlantic Ocean

C, Reading

I.

1. He has two brothers.

2. No, they aren't.

3. Yes, they do.

4. They always wear jeans and T-shirts.

II.

1. tourists

2. exciting

3. experience

4. swimming

5. seafood

D. Writing

I.

1. Nam likes watching videos in his free time.

2. What are you listening to on the radio?

3. English is her favorite subject.

4. Do you know anything about your new classmate?

5. He bought some souvenirs for his friends after his trip to Ha Long Bay.