Предмет: Алгебра, автор: Vifilin125

Преобразуйте в произведение выражение: 9а^2(b - c)
^2 - 16a^2b^2. ПОМОГИТЕ! ОЧЕНЬ СРОЧНО!

Ответы

Автор ответа: Uhierliod
3
Ответ а^2 * (-b-3c) * (7b - 3c)
Решение 9а^2(b - c)
^2 - 16a^2b^2 = a^2 * (9(b-c)^2 - 16b^2) = a^2 * (3 * (b-c) -4b) * (3 * (b-c) +4b) = a^2*(3b-3c-4b)*(3b-3c+4b) = а^2 * (-b-3c) * (7b - 3c)
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: flaxxx20
Leisure
spend free time - проводить свободное время surprisingly - удивительно
different way - различные способы horseracing - катание на лошади
rollerblade - роликовые коньки sculpture - скульптуры
cricket - крикет admission - вход
go sailing - заниматься плаванием attractions - достопримечательность
competitions - соревнования to increase - возрастать
quiz nights - ночь викторины
British people spend their free time in a lot of different ways. They do sport, they watch sport, they visit interesting places, and they have hobbies. Have you tried any of these?
What do you do in your free time? I like to watch television and listen to music a lot. But I do go on the Internet as well. I like to skateboard and rollerblade in my free time. I play rugby in my free time for Oxford Rugby Club. And I also play tennis. In my free time I usually play sport, which is usually tennis if the weather is nice or swimming.
I like playing rugby. I'm a member of a rugby team. I like swimming, playing tennis and football. I play football for a football team. I play a lot of tennis as well. I play rugby or cricket, or go sailing. I play sport, go into town, see my friends. In my free time I go to a drama group and a dance group.
So what are the top ten leisure activities in Britain? The most popular activity for British people outside their own home is ... going to the pub. Over the last ten or twenty years pubs have changed a lot.
People don't just go to the pub for a drink. Almost all pubs serve meals nowadays and many pubs have live music, karaoke competitions and quiz nights. The second most popular activity is going to a restaurant. And the third?
Young people, especially, like going out for fast food. The number of fast food restaurants in Britain has increased about 10 times since 1982. And after fast food? The fourth most popular activity is ... going to the library. Surprisingly, this is more popular than going to the cinema... although the number of people going to the cinema has almost doubled since 1980, and the number of cinemas has more than doubled, too.
Many people visit historic buildings. This is Kingston Lacey, a beautiful seventeenth century house with lovely gardens. Nearby is Corfe Castle. It is over one thousand years old and full of history. Short break holidays both abroad and in Britain are very popular. A lot of young people go to discos and nightclubs. And, of course, watching sport is a big free time activity.
Favourite sports include football ... horseracing ... and cricket, a traditional English sport. Art galleries and museums are popular, too. This is the Ashmolean Museum in Oxford. The Ashmolean is the oldest museum in Britain and has been part of the University of Oxford since 1683. They have a wonderful collection here including these beautiful sculptures. 200,000 people visit this museum every year. Like many museums in Britain, admission is free
What other places do people like to visit? Almost 3 million people visit Alton Towers every year. This ride is called Nemesis. And this one is called Oblivion. Then there's Madame Tussaud's ... the Tower of London... Legoland ... and the London Eye. The London Eye opened in March 2000 and is one of London's most popular attractions.
But what do the British do at home in their free time? Well, listening to the radio or to CDs is popular. So is reading. And people spend a lot of time visiting or entertaining their friends and family. But the most popular activity? You've guessed it. It's watching TV.

1. Answer the questions.
1. What is the most popular activity for British people outside their home?
2. What have many pubs and clubs nowadays?
3. What is the third and the fouth popular activities nowadays in Britain?
4. When has the number of people going to cinema increased?

5. What is the traditional British kind of sport?
6. Where you can find the Ashmolean Museum How many people visit this place every year?
7. What are the other popular activities of British people you know?2. Mark the statements true, false or not stated.
.
5 лет назад
Предмет: Геометрия, автор: mashka3893
Бічна сторона рівнобічноï трапеції, в яку можна вписати коло, дорiвнює 12 см. Знайти периметр трапеції.
СРОООЧНООО ДАМ МНОГО БАЛЛОВ!!
НАПИШИТЕ ПОЖАЛУЙСТА К ЗАДАЧЕ ДАНО И НАЧЕРТИТЕ ЧЕРТЕЖ ​
5 лет назад
Предмет: Русский язык, автор: lanasakara
139.Наступили сильные морозы. Снег завалил садовые дорожки. Птицы зимой галадают. Дети устроили для птиц кармушки. Девочки насыпали в них пшина. Голодные птицы быстро склювали весь корм. Как хорошо, что у птиц есть настоящие друзья!
5 лет назад
Предмет: Математика, автор: ГанжаУльяна1
помогите пожалуйста номер 10
9 лет назад
Предмет: Математика, автор: эльдар34
на координатной плоскости постройте треугольник по его вершинам A(-3;2)
B(2;3)и C(3;-2)
9 лет назад