-
упростите выражение( х-у)(х99+х98у+ух97у2+...+ху98+у99)
все числа это степени
Ответы 1
-
В конце описка - последние два слагаемых ху^(n-2)+y^(n-1).
-
Автор:
ziontdbc - 5 лет назад
-
0
-
-
Добавить свой ответ
-
Сколько букв в алфавите?
-
Предмет:
Русский язык -
Автор:
chicogzwm - 5 лет назад
-
Ответов:
1 -
Смотреть
-
- 1147 год относится к Нашей эре или До нашей эры?
-
Прочитайте текст. Установите соответствие заголовков 1-5 абзацам текстаА-D. Занесите ответы в таблицу. Один из заголовков лишний.
1Switch them on or switch them off
2Do as the Romans did ... but with a difference
3Buy clothes and save on perfume
4Buy them, wash them ... and they still look nice
5Be an artist and protect our planet
^ FASHION FOR THE FUTURE
In four different laboratories across Great Britain, scientists are already working on fashion for the future. Today we visit them and talk about their ideas.
First we go to a small university building on the outskirts of Liverpool. Jocelyn Brown, the head of the department, informs us about their project: clothes which smell. As Brown explains, people can save on antiperspirants and perfume because the clothes produce a nice, fresh aroma.
The next place to visit is a charming village on the coast of Scotland. Our host here is Mandy Wilson who manages the project for the University of Glasgow. Their idea is clothes with a tiny electrical heating system to keep the wearer warm. When it is hot, you can switch the system off and clothes are cool again!
In Wales, scientists are busy with large sheets of paper-like material. They are producing clothes which the user can paint and decorate any way they like. What's more, it is possible to wash the clothes and paint them once again. Mary Smith, the director of the project, also stresses the fact that these clothes are environmental-friendly.
But a truly modern idea of clothing is waiting fоr us in the capital of England, London. Nick Heldon of Fashion Co. presents us with something which looks like a Roman toga, a set of different belts, and a pair of scissors. We put the toga on and can do whatever we like with it: for example, out it very short, or put a belt on. Прошу помогите :((
-
Предмет:
Английский язык -
Автор:
dee dee - 5 лет назад
-
Ответов:
1 -
Смотреть
-
-
В рулетке общее количество лунок равно 32. Какое количество информации в битах (с точки зрения вероятностного подхода) мы получаем в зрительном сообщении об остановке шарика в одной из лунок?Ответ:
-
Предмет:
Информатика -
Автор:
spence - 5 лет назад
-
Ответов:
1 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35894 -
Askold
2792 -
Pikachu
2224 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1156 -
Poinntt
946 -
Bars
930 -
Queenmagic18
754