Cho hàm số y=x^3 -3mx^2 +3(2m-1) có đồ thị (Cm). 1.Chứng minh khi m thay đổi , đồ thị (Cm) luôn đi qua 2 điểm cố định

giải hộ mk 2.2 và 2.4 ik ạ vote 5 saoo nè

Exercise 1: Read the text. Write the correct words to complete the sentences. Các bạn điền các từ ở trong ngoặc vào các chỗ trống ở dưới sao cho phù hợp nha) (creation,historians, educational, knowledgeable, illustrations, greatest, accurate,comedian) So, who says only_________and archaeologists can write books about times gone by? Unlike Anthony Beevor, one of England's___________experts on the past, Jon Stewart, the American author of Earth(the book), is anything but an academic. Many would think that Stewart's background as a top__________________and brilliant talk show host would be of no use when writing a book about history. But he has managed to do it, and in such a way that almost everyone who reads it will be a bit more________________about the subject. Using humour as an_________tool, Stewart takes his readers back to the________________of time, gives his opinion on how the Earth was formed, and then proceeds to take readers through the ages only to finally end up back in the present. At times sarcastic and ironic, and some critics claim, at times_____________, Stewart's work is both entertaining and informative. Full of colourful_____________________ ,map and diagrams, the book is must-read for anyone with a sense of humour and a thirst of knowledge. GIÚP MÌNH VỚI!!!!!!!!!!!!!!!!

Bài 1: Tìm x: a, (2x-5)+17=6 b, 10-2(4-3x)=-4 c, -12+3(-x+7)=-18 d, -45:5.(-3-2x) =3 Bài 2: Tính hợp lý: a, 35.18-5.7.28 b, 45-5.(12+9) c, 24.(16-5)-16.(24-5) d, 29.(19-13)-19.(29-13)

bài 1 ý c e cảm ơn..................

Câu 26 cho 12,1 gam hỗn hợp hai kim loại A B có hóa trị (2) không đổi tác dụng với dung dịch HCl tạo ra 0,2 mol H2 hai kim loại đó là A Ba và Cu B Mg và Fe C Mg và Zn D Fe và Zn

Câu 1: hãy cho biết cần thêm điều kiện gì để a) tam giác vuông trở thành tam giác vuông cân b) tam giác cân trở thành tam giác vuông cân

các bn giải giúp mik bài này đeef : cho tam giác ABC cân tại A ( góc A < 90• ). Vẽ BH vuông góc AC ( H Thuộc AC ) , CK vuông góc AB ( K thuộc AB ) a) C/m tam giác ABH=tam giác ACK b) Gọi I là giao điểm của BH và CK. C/m AI là tia phân giác của góc A c) C/m tam giác BIC cân

Bạn nào cho mình dạng bài nào áp dụng công thức này ạ

Giúp em với ạ Em cảm ơn rất nhiều luôn ấy ạa I. Fill in the blanks with proper words, then answer the following questions. scientists/ pollution/ serious/ factories exhaust/ reduce/ require/ percentage Everyone wants to reduce (1) _______. But the pollution problem is as complicated as it is (2) _______. It is complicated because much pollution is caused by things that benefit people. For example, (3) _______ from automobile caused large (4) _______ of air pollution. But the automobile provides transportation to millions of people. (5) _______ discharge much of the material that pollutes air and water, but factories give employment to a large number of people. Thus, to end or greatly (6) _______ pollution immediately, people would have to stop using many things that benefit them. Most people do not want to do that, of course. But pollution can be gradually reduces in several ways, (7) _______ and engineers can work to find ways t lessen the amount of pollution that such things as automobiles and factories cause. Government can pass and enforce laws that (8) _______ businesses and individuals to stop, or cut down on certain polluting activities. Questions: 1)Do things that benefit people bring about pollution?  ………………………………………………………………………………………………………………… 2)Is it complicated to reduce pollution? Why or Why not?  ………………………………………………………………………………………………………………… 3)Who can find ways to lessen the amount of pollution?  ………………………………………………………………………………………………………………… 4)What can the Government do to reduce pollution?  ………………………………………………………………………………………………………………… II. Complete each sentence of the following letter. Dear Mr. Smith, 1. I write/ complain/ dirt/ smoke/ come/ your factory chimneys.  ………………………………………………………………………………………………………………… 2. Two days ago/ I decide/ do/ my washing.  ………………………………………………………………………………………………………………… 3. I wash/ sheets/ put/ out/ dry/ it/ be/ nice sunny day/ there/ be/ breeze.  ………………………………………………………………………………………………………………… 4. When I take washing in/ I be/ horrified/ discovered/ it/ cover/ dirty marks.  ………………………………………………………………………………………………………………… 5. I/ assume/ breeze/ I/ mention/ carry/ dirt/ chimneys.  ………………………………………………………………………………………………………………… This be/ not only/ because/ sheets/ but because/ we/ two small children/ who be make/ breathe/ same air.  ………………………………………………………………………………………………………………… Until this incident/ I think/ chimneys/ be safe/ clean.  ………………………………………………………………………………………………………………… 8. I already/ write/ local Member of Parliament/ this matter.  ………………………………………………………………………………………………………………… 9. Furthermore/ I must warn you/ I/ write/ local newspaper/ tomorrow.  ………………………………………………………………………………………………………………… I/ look forward/ receive/ reply.  …………………………………………………………………………………………………………………