при яких значеннях a рівняння x2-(a-5)x+1=0 не має коренів? - №29244478

при яких значеннях a рівняння x2-(a-5)x+1=0 не має коренів?
- Предмет:
  Математика
- Автор:
  mathews
- 6 лет назад

Ответы 1

1,-1,2,-2,3,-3,4,-4 итд
- Автор:
  barbie
- 6 лет назад
- 0
Добавить свой ответ

Еще вопросы

Составьте пожалуйста 3 вопроса к тексту:
Glastonbury Festival is the largest open air music and arts festival in the world. It became an example which other festivals followed. Of course, Glastonbury is best known for modern music, but its programme also includes dance, comedy, theatre, circus and other arts. The festival organiser, Michael Eavis, was a common farmer. In 1970 he visited an open air concert which greatly impressed him. So he decided to organise a big festival outdoors in the same year. He knew, it wouldn’t bring any money, but it didn’t matter. At the first festival there were more than one thousand people. Each of them paid £1 for the ticket. The price also included free milk from the farm. Later on, the festival took place almost every year and grew in size and audience. The festival takes place in southwest England on a farm. It's a beautiful and mystical place called the "Valley of Avalon". It is surrounded with a lot of legends, symbols, myths, and religious traditions dating back many hundreds of years. Legends say that here King Arthur's sword was made and the king himself was buried there. No wonder that the main stage of the festival, Pyramid Stage, has the form of a pyramid. Many believe that this is a very powerful structure, which gets energy from the stars and gives it to people. In many ways, Glastonbury is like a mix of different festivals, which take place in the countryside and last for a weekend. Each area of the Festival has its own character, its own fans and its own special attractions. For example, dance lovers go to the "Dance Village". There is also a big cinema area, "Theatre and Circus". Children can have fun in the "Kids’ Field". Some people spend the whole weekend in their favourite area. However, most of them prefer walking about and trying lots of different things. Most people who stay at Glastonbury Festival live in tents. There are lots of different camping areas, each one with its own atmosphere. You can choose where to stay: in a quiet place or a lively one. There are also places for families and disabled people. Anyway, you should remember to bring a tent with you. Of course, it's possible to rent one, but it's quite expensive.
Glastonbury Festival supports Greenpeace and has a number of programmes. There are hundreds of rubbish bins on the territory. All cans, glass, paper, electrical and electronic equipment, wood and waste are separated and recycled. Visitors are asked to clean after themselves and not to leave rubbish. The Festival supports those who come by public transport or by bicycle, not by car. If you're thinking about visiting Glastonbury, you should book tickets in advance. Today an average ticket is about £200 for three days which is quite expensive. Nevertheless the tickets are sold out in two or three hours. So be quick to catch them. There are usually more people wishing to get to the festival than tickets. Registration for the 2013 festival began in June 2011.
- Предмет:
  Английский язык
- Автор:
  nicanors3m7
- 6 лет назад
- Ответов:
  
  1
- Смотреть
Составьте пожалуйста 3 вопроса к тексту:
Where do you expect to see graffiti? Probably not in a museum. Bristol Museum and Art Gallery, in the south-west of England, was the kind of place where you could see classical pictures and statues. However, in the summer of 2009 the exhibition ‘Banksy versus the Bristol Museum’opened. The exhibition presented more than a hundred works by Banksy, one of the world’s most famous graffiti artists. Banksy is a puzzle to all. He keeps his identity secret. He hardly ever gives interviews and likes to remain anonymous. Nobody knows much about his life or his background but many people believe that his real name is either Robert Banks or Robin Banks and that he was born in England, somewhere near Bristol. Banksy’s street art is always provocative. It's his way of communicating with society. His graffiti is characterised by bright and frequently shocking images, often combined with slogans. His work is often a personal protest against wars, social policy or people's behaviour. Although graffiti is not allowed in cities, Banksy's works have become immensely popular. Banksy believes that art should not be used for advertising. He has refused four times to do adverts for Nike, a famous sportswear company. A year after the Bristol exhibition, Banksy made a film called ‘Exit Through the Gift Shop’. The film tells the story of a street artist. It got many positive reviews from the critics and from the general audience. Another curious fact from Banksy's biography is that once he was named among the 100 most influential people in the world. He actually found himself in the company of Barack Obama, Steve Jobs and Lady Gaga. When he was asked to send a photo, Banksy sent a picture of himself with a paper bag (recyclable, naturally) over his head. His fans still don’t really know who he is. Bristol isn’t the only place in Britain to welcome and accept graffiti. A park in Dundee, Scotland, has the longest legal graffiti wall (almost 110 metres long) in the UK. Anyone can paint on the wall any time they like. The idea of this graffiti wall project is to demonstrate the positive side of graffiti and to organise workshops and graffiti classes for local children. Even the capital of the country could not stay free of street art. There's a special website dedicated to London's street art and artists. The site's team is a group of enthusiastic young people who are closely connected with the street art world. They try to record and register all the works and display them on their ‘Street Art London’ site. That is quite a job to do! The reason is that street art is very temporal and short-lived: graffiti is soon covered by another wall painting so they have to be quick to take a picture and post it on the website.
- Предмет:
  Английский язык
- Автор:
  noéwolfe
- 6 лет назад
- Ответов:
  
  1
- Смотреть
На одном складе было в 2,5 меньше картофеля чем во втором. как на первый склад завезли 160т а на второй 60т картофеля стало порувну.
Сколько тонн картофеля было первоначально но на каждом складе.
- Предмет:
  Математика
- Автор:
  ghoulie
- 6 лет назад
- Ответов:
  
  1
- Смотреть
Укажите ряд с глаголами 1 спряжения совершенного вида
А)вытерпеть,прочитать,слушать
В)вернуть,дышать,уметь
С)увидеть,гнать,сгореть
Д)выбрить,засеять,отмыть
- Предмет:
  Русский язык
- Автор:
  claytoni5gb
- 6 лет назад
- Ответов:
  
  2
- Смотреть

How much to ban the user?

1 hour 1 day 100 years