(x-y)^2-(x+y)^2 giúp mik vs!!!!

3x+5/2-1 ≤ x+2/3+x giúp mik vs mn ơi

Mong các anh giúp em kèm giải thích ạ hứa vote 5* + ctrlhn sieeu cảm ơn mấy anh chị ạ 1.This book is not really ________. It is a waste of money buying it.a. inform b. information c. informative  d. informatively2.Sometimes it is ________ to find suitable books for our children.a. difficult b. difficulty c. difficultly d. difficulties3.Read the book ________ and you can find the information you need.a. care b. careful c. carefulness d. carefully4.Not many people find reading more ________ than watching TV.a. interest b. interested c. interesting d. interestingly5.To become a novelist, you need to be ________.a. imagine b. imagination c. imaginative d. imaginarily6.Mary enjoys reading _____, adventure, and whatever else she can either buy or borrow.a. romance b. romantic c. romanticize d. romanticism7.The novel has had a tremendous impact on ________ and publishing markets.a. entertain b. entertainer c. entertainment d. entertainingly8.The children have very different __________. a. personb. personalc. personalityd. personalities9.He talked ____________ of the past and his youth.a. romance b. romanticc. romantically d. romances10.Star Wars was created by a highly_________ writer.a. imaginableb. imaginativec. imaginaryd. imagination15.The film The First to Fly is an____biography of the two famous Wright brothers. a. entertainer b. entertaining c. entertained d. entertainment

Viết đoạn văn kể về tâm trạng của em trong 1 buổi khai giảng năm học mới.( lớp 8 nha) nope coppy

Mong các anh giúp em kèm giải thích ạ hứa vote 5* + ctrlhn sieeu cảm ơn mấy anh chị ạ 8.Chemical wastes from factories are _____ that cause serious damage to species habitats.a. pollutes b. pollutants c. pollutions d. polluters 9.Development of the area would _________wildlife. a. danger b. dangerous c. endanger d. dangerously 10.England was one of the first countries to ____________.a. industryb. industrialc. industrialize d. industrialization 11.Their ____________is rejected due to some problems of pollution.a. suggestb. suggestionc. suggestived. suggestible 12.We all regard pollution as a ____________matter to human beings.a. seriousb. seriouslyc. seriousnessd. seriousful 13.The people in our village are leading a ________life.a. peaceb. peacefulc. peacefullyd. peacefulness 14.We have to suffer a lot of floods due to our serious  of forests.a. destroyb. destructivec. destructiond. destructor

Các vị cao nhân làm ơn giúp mình câu này với ạ

giúp mình với Cần gấp Các bạn giúp mình

Cho 200 ml dd Ba(OH)2 vào 100 ml dd H2SO4 thì thu được 23,3g kết tủa và dung dịch A. Cho tiếp 100 ml dd HCl 2M vào dd A thì trung hòa hoàn toàn. Nồng độ mol/l của dd H2SO4 và Ba(OH)2 đã dùng lần lượt là: (Ba=137, S=32, O=16) A. 1M; 0,5M B. 0,5M; 1M C. 1M; 1M D. Đáp số khác

Giải giúp mình bài này với ạ cần gấp

x-4/10 + x-5/11 = x-6/12 + x-7/13 Tìm x