Tìm x (x+2)mũ2=(x-3)mũ2-2(x-1).(x+1)=9 Ai trả lời đc vote 5*

Cho tam giác ABC đều. Vẽ ra phía ngoài tam giác ABC các tam giác đều ABD, ACE, BCF. Chứng minh: a) Ba điểm D, B, F thẳng hàng + Ba điểm D, A, E thẳng hàng + Ba điểm E, C, F thẳng hàng b) AF= BE= CD c) Ba đường thẳng AF, BE, CD cùng đi qua một điểm.

Các bạn lm ơn giúp mk vs, trắc nghiệm nhé, xong trc 20p giúp mk, 9 câu thôi

II. Read, then write True (T) or False (F) for the sentences below: There are four seasons in a year in Vietnam. They are: spring, summer, fall, and winter. In spring, it is usually warm. Sometimes, it is cold. There are many flowers in spring. After spring comes summer. In summer the days are long and the nights are short. We often go to the seaside in summer. Fall is the season of fruits, especially in tropical countries like Vietnam. In winter, it is cold. The days are short and the nights are long. There are 4 seasons in Vietnam. …………. It is sometimes cold in spring. …………. We often go to the seaside in winter. ………….. Fall is the season of fruits. ……………. The days are long in winter. …………… III. Re- oder the words to make full sentences: Mr/ goes/ in/ moning/ the/ always/ Baker/ jogging/. ………………………………………………………………………………………. often/ swimming/ the/ on/ go/ we/ weekends. ………………………………………………………………………………………. his/ school/ than her/ is/ taller/ school. ………………………………………………………………………………………. there/ of/ a/ lot/eggs/ the/ in/ market/ are/? ………………………………………………………………………………………. their/ listening/ children/ room/ in/ are/ to/ my/ music. ……………………………………………………………………………………….

Bài 2 : Tìm x , biết : a) 2.x+4/5.x=7/25 b) 3-lx+3/7l=56/21 c) (2x-2,4)^2 : 3/4-1/3=1

Vẽ đậu mầm đang hok bài cute trên app full màu full line pic kí pic ko

calli chữ : '' tôi vô tội '' nha mn

Work có phải là một danh từ đếm được ko?

Cho mạch điện như hình vẽ bỏ qua điện trở của ampeke và các đoạn dây nối. Cho biết U=16V, R0=4 ôm, R1=12 ôm, Rx là giá trị biến trở a) Tính Rx sao cho công suất tiêu thụ trên nó bằng 9W và tính hiệu suất của đoạn mạch AB biết rằng tiêu hao năng lượng trên R1,Rx là có ích trên R0 là vô ích b) Với giá trị nào của biến thì công suất tiêu thụ trên cực đại. Tính công suất đó. MOD TRỢ GIÚPPPPPPPPPPPPPP

VIII. Choose the best anwer to fill in each the blank. How many floors..............in your school? A. there are B. there has C. are there D. have there 2. Does Nga play volleyball? No, .................. A. she not plays B. she don't C. she isn't D. she doesn't 3. ................do you go to school? I walk A. How B. By what C. How many D. How by 4. My sister and I ............television in the living room now. A. am watching B.are watching C. is watching D.watching 5. Nam is ................something on his book. A. writing B. wite C. wrote D. writes 6. Are there ..................stores on the street? A. a B. an C. any D. the 7. They are going to New York .........plane. A. in B. by C. with D. on 8. This sign says "stop". We...................go straight ahead. A. can B. don't can C. must D. must not 9. Hoa and I................badminton in the yard. A. playing B. is playing C. are playing D. am playing 10. It's twelve o'clock. Let's ..................home. A. go B. to go C. going D. goes I. Circle the best answer: How many …………..… can you speak? A. languages B. countries C. people D. speeches. 2. How big is Singapore? - It’s much……………..… than Malaysia. A. small B. smaller C. smallest D the smallest 3. This is …….… longest river in the world. A. the B. a C. an D. most 4. ……………..… are you going to travel there? - Let’s call a taxi. A. What B. How C. Where D. Why 5. I’m going to visit my uncle……………..… Saturday moning. A. in B. at C. about D. on 6. You should not sit and ……………..… television all evenings. A. look ` B. see C. watch D. visit 7. She likes ……………..… in the forest when it’s cool. A. walk B. walking C. walks D. to walking 8. We need a tent to go ……………..… A. fishing B. jogging C. camping D. swimming. 9. How ……………..… money do you often send to him? A. often B. many C. far D. much 10. The opposite of “weak” is…………… A. thin B. fat C. big D. strong Many.....................come to Hue everyday. A. visitors B. visit C. visiting D. to visit. ............collecting the empty bottles? -Yes, Good idea. A. Let's B. What C.What about D.Why don't we .....................milk does Mr. Hai produce every day? A. How B. How many C. How much D. How far She speaks....................very well. A. Chinese B. China C. the Chinese D. a Chinese Mai doesn’t like playing soccer. She .....................plays soccer A. always B. never C. usually D. often They ...........visit the citadel in Hue next month. A. are going B.is going to C.are going to D.are We..........recycle waste things in the factory. A. should B. should to C. shouldn't to D. ought Let's go fishing .....................the morning. A. at B. in C. on D. to Nam doesn’t want .....................coffee. A. a B. some C. any D. an It's seven thirty and Minh is late.....................school. A. to B. at C. for D. in