Câu 1:Cho P(x)= x³-2x³+3x+1; Q(x)= x³+2x²+x-2

a. Tính P(x)+Q(x) b. Tính P(x)-Q(x)

Câu 2:Cho P(x)=2x⁴+2x²+x-2, tính P(1); P(-1)

Câu 3:

a. Tìm nghiệm của đa thức: H(x)= 2x+10

b. Chứng tỏ đa thức: Q(x)= x²+2x+2 không có nghiệm

Câu 4: Cho tam giác ABC vuông tại A kẻ đường phân giác BE, kẻ EH vuông góc với BC (H thuộc BC) gọi K là giao của AB và HE. CHứng minh rằng:

a. Tam giác ABE=tam giác HBE

b. BE là đường trung trực của đoạn thẳng AH

c. EK=EC

d. AE<EC

Câu 5: Tìm nghiệm của đa thức: P(x)=2x-1

Câu 6: Cho đa thức: P(x)=16x³+5x⁴-4x²+8x²-9x³-5x⁴+15-7x³

a. Thu gọn đa thức trên và sắp xếp theo lũy thừa giảm của biến

b. Tính P(-1) và P(1)

Câu 7: CHo tam giác ABC có góc B=90^o, trung tuyến AM. Trên tia đối của tia MA lấy điểm E sao cho ME=MA. Chứng minh:

a. Tam giác ABM=tam giác ECM

b. AC>CE

c. Góc BAM>goác MAC

d. EC vuông góc với BC

Câu 8: Chứng tỏ rằng đa thức: P(x)= x⁴+2x²+1 không có nghiệm

III. Tìm lỗi sai và sửa lại cho đúng

1.She is a safely cyclist

safely->safe

3. from->to

4.ride->riding

I. Làm theo chỉ dẫn

1. I'd like to see a cowboy movie.(đặt câu hỏi cho câu gạch chân)

2.Why don't we go fishing?(Viết lại câu cho nghĩa không thay đổi với từ "What about")

3. My tooth hurts. I have a cavity. (Đưa ra một lời khuyên bằng từ "should")

4.Lan didn't go to shool yesterday because she wash sick.(Đặt câu hỏi bằng từ "Why")

II.Đọc đoạn văn sau và chọ từ phù hợp nhất để điền vào chỗ chấm

for-took-great-arrived-as-peaceful-asleep

unfortunately-return-excited-roadside-ice cream

The Robinsons had a(1)............holiday in Nha Trang.(2)..................the holiday soon ended and it was time to(3)...........home. They (4)............a bus back to Ha Noi. Liz was (5)..........(6).........the bus drove through the countryside. She saw rice paddies (7)........the first time. Everything looked calm and (8).........At four o'clock, the bus stopped at a small (9).......restaurant for ten minutes. Mr.Robinsons was (10)........so Mrs.Robinsons bought some peanuts and an (11).........for Liz. The bus (12)........in Ha Noi at about 7 pm.

III. Hoàn thành đoạn văn sau với một từ thích hợp

Last weekend, Ba went to Ha Long Bay (1)..........his family.

They went there (2).......bus. It took them about two (3).........

It is about 180 kilometers (4).........HA Noi to Ha Long Bay.

He arrived there at 9.00 a.m. He (6).........some photograohs. He returned to Ha Noi in (7).........evening. He felt very (8)..........

Giúp mình vs

I.Cho dạng đúng của từ trong ngoặc

1.Minh looks (worry)...................again.What's the matter with him?

2.This knife is (use)............It can't cut anything.

3.Wash your hands before (touch)....................food.

4.If the machine goes wrong, teel the (engine)...............

5.She has a lot of stamps in her (collect).............

6.Go straight ahead and take the (two)..............on the left

7.What a (love)........drees! Did you make it yourself?

8.Mrs White's daughter is having a (medicine)...................check-up

9.An has a toothache.It is very (pain)...............

10.Catching the common cold is (please)...............for everybody

II.Cho dạng đúng của động từ trong ngoặc

1.Look! That plane (fly).........toward the airport. It (land)................

2.I (not like).............volleyball, so I (not learn)............to play it

3.We (see)..............a movie tomorrow. You (join)............

4.Why you (make).............so much noise in the room, Lan?

-We (rehearse).............a play, mum

5.He is busy at the momen. But he (come)..........to give you a helping hand as soon as he (finish)...........his work

III.Viết lại câu sao cho giữ nguyên nghĩa so với câu đầu

1.It took Mr.Hoang half an hour to walk to work yesterday

=>Mr.Hoang spent........................?

2.What is the price of this cap?

=>How much....................................?

3.You shouldn't eat too much meat

=>You'd..............................

4.Lan is the youngest of the three sisters

=>lan has.........................

5.Our house is older than any other house in the living venter

=>Our house..............................

6.Mai usually studies hard

=>Mai is usually a........................

7.There are eight hunderd stamps in Hoa's collection

=>Hoa's collection...........................

8.How heavy is the chicken?

=>What....................................?

9.How much is this book?

=>What is...................

10.Listening to music is more interesting than watching TV.

=>I prefer...............................

IV.Dùng từ gợi ý viết thành câu hoàn chỉnh

1.you/better/eat/too/candies/because/they/not good/your teeth.

2.Hoa/measure/height/weigh/the scale/the moment

3.Mr.Lam/now wear/face mask/protect him/breathe/dust

4.last year/brother/work/engineer/printing factory

5.what/wide/the West Lake?

6.this morning/I/eat/bread/and/drink milk/breakfast

7."balanced diet"/mean/you/eat/variety/foods/without/eat/much/anything

8.children/spend/only/smallpart/freetime/play/electronic games

9.public library/city/have/thousands/books/and/Lan/begin/borrow books regularly

10.video games/good fun/but players/must/careful

I. Sử dụng dạng đúng của động từ trong ngoặc để hoàn thành câu

1. Fruit juice and milk are very................drinks for children (Health)

2. She has a lot of stamps in her..................(Collect)

3.Nam is the................student in his class (Good)

4.Mai is a good dancer so she dances very.................(beauty)

5.We usually take part in many different...............at recess (Act)

6.This dictionary is very..............for you to learn English (Use)

7.There are many badminton...............nowadays (Compete)

8.The nurse needs to know Hoa's...................(High)

9.English is an.................and important subjecrt (Interest)

10.Hoa is having a...................check-up (Medicine)

II.Đọc đoạn văn sau và chọn từ thích hợp để hoàn thành. (Mỗi chỗ tróng 1 từ)

My name is Nam. Last weekend, I visited the countryside...........(1) my classmate. The place is not very far..............(2) our town. We came there by bus-a jorney of two hours. On ariving there, we.................(3) straight to our friend's house. He is Trung whose parents..........(4) farmers living in the countryside. Uwe drank coconut milk and.............(5) a lot of country pancakes. After that we went flying kites in a paddy................(6) then we went swimming in the river near Trung's house. We played games together.

Finally, in the afternoon we..............(7) the countryside for the twon. And reached home at about 6 P.M. We really had a lot of fun. The countryside is wonderful to me. It has...............(8) beatiful and intersing places than in the twon.

III. Mỗi câu có một lỗi sai (từ hoặc cụm từ), em hãy tìm và sửa lại cho đúng

1. My friend doesn't like potatoes, and I don't like them, too

2.There are not much good programs on television tonight

3.I have less books in English than my classmates

4.Where were you buy these picture books last month?

5.My mother often eats a few fruit for breakfarst

6.Mrs.Huong didn't watch any movies last week and so did we

7.I feel thirsty. I'd like drinking some water

IV. Dùng từ gợi ý viết hoàn thành câu sao cho nghĩa không đổi

1. Listening to music is more interesting than watching TV

=>I prefer............................................................

2. How heavy is the chicken?

=>What................................................................

3.We have a two-month summer vacation

=>Our summer vacation last................................

4.You shouldn't forget to write to your parents

=>You'd....................................

5.Nam didin't pass the final examination-because of his laziness

=>Because Nam...........................

V. Dùng từ gợi ý viết thành câu hoàn chỉnh

1.Ba/to/go/school/foot/a week ago.

2.your father/watch/TV/room/the moment?

3.Last night/we/do/homework/7.00/and/go/bed/9.30

4.Hoa/buy/new bicycle/next week

5.Why/they/not/go/work/bus/every day?

Giúp mk vs ạ