Đáp án + Giải thích các bước giải:
`(x^n+1)(x^n-2)-x^(n-3).(x^(n+3)-x^3)+2018`
`=x^n .x^n-2.x^n+1.x^n-1.2-(x^(n-3).x^(n+3)-x^(n-3).x^3)+2018`
`=x^n .x^n-2.x^n+1.x^n-1.2-(x^(2n)-x^(n))+2018`
`=x^(2n)-2x^n+x^n-2-x^(2n)+x^(n)+2018`
`=(x^(2n)-x^(2n))-(2x^n-x^n-x^(n))-(2-2018)`
`=0-0-(-2016)=2016`
`(x^n +1)(x^n-2)-x^(n-3) .(x^(n+3) -x³)+2018``=x^n .x^n -x^n.2+1.x^n -1.2-x^(n-3) .x^(n+3)+x^(n-3).x³+2018``=x^(n+n)-2x^n+x^n-2-x^(n-3+n+3)+x^(n-3+3)+2018``=x^(2n)-2x^n+x^n-2-x^(2n)+x^n+2018``=(x^(2n)-x^(2n))+(-2x^n+x^n+x^n)+(-2+2018)``=2016`
Read the followmg passage.,. Young people in the UK are more likely to die from asthma than those in other wealthy countries, a report has found. Death rates for asthma in 10 to 24-year-olds was the highest in the UK among all 14 European nations included in an analysis of 19 high-income countries. The UK also had the highest obesity rates for 15 to 19-year-olds among the European nations. The government said it had "world-leading plans" to safeguard child health. Overall, the report found the UK to be lagging behind other nations across a number of health indicators. The study, from the Association for Young People's Health, analyzed 17 measures of health and well being for 10 to 24-year-o3ds in countries that included Germany, France and Italy, as well as Japan, the US and Australia. It found that while 3 young people in the UK are making some healthier choices, such as drinking less alcohol and smoking less, more are entering adulthood with long-term health conditions. Nearly one in five young people in the UK is estimated to be living with a longstanding health condition, such as type 2 diabetes, the report finds. In England, the figure has gone from 13.5% in 2008 to 18% in 2016. (h tips://www, bbc. com /news/) 61.Ascending to a report, young people dm the UK sire more likely to die from _____ thsim those im other wealth]/ countries. A. fever B. asthma C. rash D. allergy 62.Which off the following group age had the highest death rate ffor asthma? A.under 10-year-old B. 10 to 19-year-old C. 10 to 24-year-old D. over 30-year-old 63.Which is also a health problem off teenagers m the UK? A.Young people in the UK had the highest rates of smoking among the European nations B.Young people in the UK had the highest diabetes rates among the European nations C.Young people in the UK had the highest rates of drinking alcohol among the European nations D.Young people in the UK had the highest obesity rates among the European nations 64.How many measures of health and wellbeing were analyzed in…….the study from the Association for Young People's Health? A.nearly 10 B. exactly 24 C. exactly 17 D. less than 15 65.What is the message to the readers? A.We should prevent teenagers from being asthma. B.We should take teenagers who are obese into account. C.We should limit the use of alcohol and cigarette D.We should encourage teenagers to have a healthy lifestyles
vẽ mầm siu siu tức giận ikkkkkkkkkkkkkkk mn NL hôm lay tức quá
1)Tìm x,y thoả mãn: a) (2x+1)(y-2)=12 b) xy² + 2x -y² = 8 2) Cho nó là số tự nhiên biết: a) Tìm ƯCLN( 2n+9;n+4) b) Chứng tỏ 3n+7 và 2n+5 là 2 số nguyên tố cùng nhau. Giúp mình với 🙏🙏( nếu đc giải thích rõ ràng giúp mình nhé 💖💖)
Ai đó giúp mik vs nha, mik cảm ơn.
Chỉ ra và phân tích tắc dụng của các bptt có trong đoạn văn sau: Mùa xuân, cây gạo gọi đến bao nhiêu là chim. Từ xa nhìn lại, cây gạo sừng sững như một tháp đèn khổng lồ. Hàng ngàn bông hoa là hàng ngàn ngọn lửa hồng tươi. Hàng ngàn búp nõn là hàng ngàn ánh nến trong xanh. Tất cả đều lóng lánh, lung linh trong nắng. Chào mào, sáo sậu, sáo đen... đàn đàn lũ lũ bay đi bay về. Chúng nó gọi nhau, trêu ghẹo nhau, trò chuyện ríu rít. Ngày hội mùa xuân đấy.
vẽ chibi/ anime/..... ko dcj vẽ ẩu quá nha xấu quá là bc á NL: có phải mik chỉ sống dcj 2 đến 4 phút ko nhỉ :'3 vì khi mik thở thì cơ thể mik dcj refresh lại :'3 và khi mik ko thở cơ thể sẽ ko dcj refresh => sẽ chết :'3 [ nếu trả lời đúng + giải thích dcj ( đừng triết lí quá nhiều là dcj :'3 ) thì mik sẽ cho một câu hỏi bất kì qua nick phụ nha =v=]
Giải chi tiết câu này giúp mình với ạ Giải theo kiến thức lớp 7 ạ🥺🥺
Xin nhận xét ạ ;-; Xin lũi vì tranh phèn ;-; ______________________________ Vẽ anime/ chibi có màu chủ đạo là xanh da chời :33 Hết
33. Because the new camera didn’t work, Mr. Robinson took it back to the shop. The new ______________ . 34. He is sorry that he can’t come here now. He wishes ____________________________________. 35. He cut the cake into three equal parts. The cake __________________________________. 36. The last time we visited Kuala Lumpur was two years ago. We have ________________________ . 37. This is the most expensive book we’ve seen so far in this shop. There hasn’t been_______________. 38. There is no better teacher in this school than Ms. Ann. Ms. Ann is_________________________. 39. Shall we buy a good dictionary to study foreign language better? They suggested that a______________. 40. Mr.Chau got annoyed with me because I did not attend the meeting. Mr.Chau blamed _________.
Giáo viêm chỉ e bài này vs e k bik làm
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