Предмет: Алгебра, автор: Аноним

Помогите. Даю 20 баллов

Доказать, что многочлен x³+y³+z³-3xyz делится на многочлен x+y+z.​​

Ответы

Автор ответа: 95Katia95
1

Решение на фото. Дважды сворачивала формулу куб суммы и выносила общие множители

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Прочитайте текст. Установите соответствие между заголов¬ками А — F и пронумерованными абзацами текста 1 — 5. Запи¬шите свои ответы в таблицу. Используйте каждую букву только один раз. В задании есть один лишний заголовок.
A. The unexplained
B. How horror stories make us feel
C. Fears we can easily explain
D. Two kinds of stories
E. Real life fears
F. Not like other films
1. Horror films don't usually contain characters with strong personalities or have strong stories like other films. We are not interested in Dracula's psychological reasons for biting people. Horror stories can be supernatural, biological or physical, and they can take place anywhere. The important thing about them is how they make people feel.
2. People like stories that have an emotional effect on them. For example, some people like romantic stories, which make them feel sad or remind them of being in love. Horror stories and feeling afraid make our hearts beat faster. We experience the same feelings that we get when we do sport or ride on a rollercoaster. People feel panic because they are frightened and this is exciting. The person watching the film or reading the book shares the feeling of the human being in the story.
3. There is another reason why people enjoy feeling afraid. It seems that horror stories help people to do something about things that worry or scare them, such as the dark or pain. They can sit in a safe cinema seat and watch the dark or pain on the screen. When they come out of the cinema, their real fear doesn't seem so bad.
4. There are two different types of fear in horror stories. In the first typet the danger always comes from outside, such as monsters or vampires like Dracula. Human beings can attack the monster, and there is usually a happy ending of the story, the danger disappears. The second type is more terrifying. The danger comes from inside people, and it is usually more realistic to people. Human beings fight against it, but they are never successful and the story is usually open-ended, the danger may return, or get worse!
5. Finally, frightening stories are popular because they show us impossible, unknown beings and things we don't understand. These things both fascinate us and terrify us. Because we are fascinated, we keep on watching or reading, even though we are frightened. This is what gives us the experience which so many of us find enjoyable.
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Утверждение
Прочитайте текст. Определите, какие из утверждений А5 — А8 соответствуют содержанию текста (1 — True), какие не соот¬ветствуют (2 — False) и о чём в тексте не сказано, то есть на основании текста нельзя дать ни положительного, ни отрицательного ответа (3 — Not stated).
Geoffrey Dickens, a Member of Parliament in England, had a problem when he went to a party to meet some of his voters. There was a very unattractive woman at the party who followed him everywhere he went. He was trying to talk to «his public» but every time he turned around, there she was again- asking him stupid questions. He couldn't escape! By the end of the party he was very angry. A few days later he received a letter from her. His irritation disappeared when he finished reading her letter, because at the end of the letter, after her name, she had written «Horseface». The poor woman obviously knew about her disadvantages but she could laugh about them. Geoffrey liked that. So he sent her the photo she had asked for and he added a short personal note: «To Horseface, with best wishes, Geoffrey Dickens». However, he had a terrible shock later when his secretary asked him about the letter. «It was from that ugly woman at the party», the secretary said. Then he added, «I wrote 'Horseface' after her name so you'd know which one she was».
A5 Geoffrey was a politician.
l)True 2) False 3) Not stated
A6 He met an ugly woman in the street.
l)True 2) False 3) Not stated
А7 The woman knew that she was not pretty.
1) True 2) False 3) Not stated
А8 The woman wrote «Horseface» at the end of her letter.
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