phân tích đa thức thành nhân tử

giúp mình part 3.......................................................................................................................................................

biểu diễn trên trục số, giúp mk với

VII. Complete the questions, using the verbs from the box in the correct form. do go listen eat 2...................your parents like...........on holiday? 3..................you enjoy ..............ice-cream? 4............ your friends hate............their homework? III. Read the article and then decide whether the statements are true (T) or false (F). After school Susan goes home to do her model-making. She loves making models. She started about a year ago. She needs about two weeks to make a model. Then she puts it on the shelf in her bedroom. She has about twenty models now. She thinks she will need to get another shelf soon. Last term she tried to start a club for model-making at school but the teachers and other children weren’t interested. She thinks she has a lot of fun anyway. 1…… Susan makes models when she stays at school. 2. …..She has made her models for about one year. 3. …..It takes her two weeks to make two models. 4. …...She will need another shelf for her models soon. 5. …….Susan tried to start a club for model making and the teachers and other children were interested in it very much. III. Read the passage, and then choose the best answer. Along with jogging and swimming, cycling is the best all-round forms of exercise. It canhelp to increase your strength and energy, giving you a stronger heart. You don’t carry the weight of your body on your feet when cycling. It is also a good form for people with a pain in your feet or your back. You should start your hobby slowly. Doing too quickly can have bad effects. You should cycle twice or three times a week. If you find you are in pain, you will stop and take a rest. 1. Why is cycling a good form of exercise? …………………………………………………………………………………… 2. Why might people with a pain in the back go cycling? …………………………………………………………………………………… 3. What will happen if you do too quickly? …………………………………………………………………………………… 4. How often should you go cycling? …………………………………………………………………………………. 5. What will you do if you find you are in pain? ………………………………………………………………………………….

6.__________ differences between the two social groups can be reflected in the way their people __________with each other. A. culture - communication​C. culture - communicate B. cultural - communication​D. cultural - communicate 15 Nowadays, many teenagers chat with each other on Facebook, Twitter and other social networking sites using _____________. A. netlingo​B. idiom​C. phrase​​D. code Choose the word or phrase that is CLOSEST in meaning to the part in each of the following sentences. 16.The most popular evening out among teenagers is going to the cinema. A. common​B. famous​​ C. interesting​​ D. boring 17. He is hooked on football so much that he goes to every match of his favourite team. A. is interested in​​B. is fed up with​C. is tired of​​D. is in favour of 18. What do you like doing in your leisure time! - I often listen to music and play basketball with my friends. A. working time​​B. holiday time​C. free time​​D. break time

Câu 9:Một sân bóng hình chữ nhật có nửa chu vi 172m, chiều dài hơn chiều rộng 36m. Tính diện tích của sân bóng hình chữ nhật đó.

S:= 0; I:=1 ; While I<9 do Begin S:= S+i ; i:= i+ 2 End

Bài 8: Dũng có 54 viên bi. Dũng cho Bình 4/(6 ) số bi. Cho Minh 2/(9 ) số bi còn lại sau khi cho Bình. Hỏi Dũng cho Bình bao nhiêu viên bi?

Chỉ cần ghi đáp án ,ví dụ 1. aa/bb 2.aa/bb

Câu 5: Hãy chỉ ra nhận xét sai khi quan sát ánh sáng phát ra từ ngọn đèn dây tóc. A. Đó là một chùm sáng phân kì. B. Trong chùm sáng đó có vô số tia sáng. C. Trong chùm sáng đó có các tia sáng riêng biệt. D. Truyền đến mắt ta không phải là một tia sáng đơn lẻ. Câu 10: Vào lúc ánh sáng mặt trời hợp với mặt đất một góc 450 . Người ta thấy bóng một cây cọc trên mặt đất dài 5m. Hỏi cây cọc đó cao bao nhiêu? A. 10m B. 7,5m D. 5,5m C. 5m