viết chương trình dãy A gồm N số nguyên khác nhau và 1 số nguyên K cho biết vị trí phần tử có giá trị bằng K trong dãy ( nếu có )

1 Tìm giá trị lớn nhất nhất , nhỏ nhất của cá biểu thức sau
F= 2x^2- 6x
I) I= x-x^2
K) 2x- 2x^2 - %​

7. It is harvest time, so we help...................the rice onto buffalo- drawn cart.

A. herd B. load C. dry D. fly

8. Sometimes, I go.........................the buffaloes with the boys.

A. swimming B. riding C. driving D. herding

9. My grandfather has made me the largest, ..................colorful kite I’ve ever had

A. as B. more C. most D. the

10. I live more......................here

A. happy B. unhappy C. happily D. unhappily

11. Everything seems to move more.................here than in the city

A. slow B . slower C. slowly D. slowlier

12. We move two or three times a year to look........new pastures for our cattle

A. at B. in C. after D. for

13. The cattle provide most of our needs: ...........products, meat and clothing

A. daily B. days C. dairy D. yearly

14. We live in a................., our traditional circular tent.

A. ger B. town house C. apartment D. stilt house

IV. Give the correct form of the verbs below.

15. Buffaloes ( herd).............................on the grasslands by the nomadic children.

16. Yesterday, they came and (take).......................me to the paddy fields to fly kites.

17. The circular tent (keep)...................us cool in summer and warm in the winter.

18. Now, I (fly).........................a kite

VI. Give the correct form of the words below.

24. Children enjoy...................around the fields, shouting anf laughing happily. RUN

25. The............................have a very hard life. They can not live in a place for a long time. NOMADIC

26. The hill are..............................in spring when the wild flowers bloom. COLOR

27. My father drives.........................than my mom. CAREFUL

VII. Rewrite the sentences without changing the meaning

28. My children run faster than me.

=>I run............................................................

29. People in the city work harder than people in the countryside.

=>People in the countryside don’t work as.............................................................

30. Nam is a good cook.

=> Nam cooks..........................................................................

31. Lan is a fast runner.

=> Lan runs...............................................................................

32. We understand the lesson less than our friends.

=> Our friends understand....................................................

VIII. Fill in the blanks with the right prepositions:

33. I was born ____ April 4th.

34. What is he doing _____ this moment?

35. His mum is always proud ___ him.

36. The bus collected us ____ 5 o’clock.

1/Tính giá trị của biểu thức

a. x^2 + 6 x + 9 với x = 9997

b. x^3 - 12x^2 + 48 x-64 với x = 4

c. x^3 - 3x^2 + 3 x - 1 với x= 11

d. 49x^2 - 70x + 25 với x= 5

2/. Tìm x, biết

a. ( x+ 3 ) . (x^2 - 3x + 9 ) - x. ( x-1) .(x+1) = 14

b. (x+1 ) . (x^2 _x+1) - x. (x-3) . (x+3) =-27

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

d. (x-3) . (x^2+3x + 9) + x.(x+2)_ . (2_x) = 1

1/Rút gọn rồi tính giá trị biểu thức M tại x=1

M= ( x^2 + 1 ) . ( x- 2 ) - ( x+ 2 ) . ( x^2 - 2 x + 4 )

2/ Rút gọn các biểu thức

a. A = ( 3x + 7 ) ^2 + ( 3x + 10) ^2 _ 2(3x+7 ) .(3x+10 )

b/ B= ( x-y) ^2 - 92x^2 - 2y^2 ) + (x+y )^2

c/ C= (x^2 + 1 ) .( x-5 ) - (x-5 ) .(x^2 + 5x + 25 )

Rút gọn các biểu thức sau

a. (x-2 ) .(x^2 +2x + 4 ) - (x^3 +2)

b. (x+4) . (x^2 -4x + 16 ) - (x-4) . (x^2 + 4x +16)

c. (x-2 )^3 - x (x+1). (x+1). (x+1) +6x( x-3)

d,(x-2).(x^2-2x+4 ) .(x+2) .(x^2 +4x +4 )

Viết lại câu sử dụng so sánh kép:

1. He learns more. He becomes smarter.

2. The wind is strong. The rain is big.

3. Hể reads a lot. He knows a lot.

4. She eats a lot. She becomes fat.

5. He plays video games a lot, He is stupid.

6. She sleeps a lot. She becomes lazy.