а) x^2 - 18x + 77 b) 10x^2 - 11x - 6 - Дата: 26.10.2019, Автор: jazlene9prx - Znanija.Site

а) x^2 - 18x + 77
b) 10x^2 - 11x - 6
- Предмет:
  Алгебра
- Автор:
  jazlene9prx
- 5 лет назад

Ответы 1

1) D=b^2-4ac=18^2-4*77=324-308=√16=4X1=(18+4)\2=11X2=(18-4)=72)D=11^2+4*10*6=√361=19Х1=(11+19)\2=15Х2=(11-19)\2=-8
- Автор:
  janiyahjoseph
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

Можете написать анализ стиха Брюсого "Баллада о любви и смерти" по плану лирического произведения? Умоляю!
- Предмет:
  Литература
- Автор:
  digger
- 5 лет назад
- Ответов:
  
  1
- Смотреть
7. When she is alone, she often talks to….

a) her b) herself c) she d) herselv

8. The day before yesterday Mary was made…the poem by heart.

a) to learn b) learn c) learnt d) learning

9. This house…in the 18th century looks very beautiful.

a) build b) to build c) built d) building

10. The team wouldn’t have lost the game if they …harder.

a) trained b) would train c) had trained d) train

11. She …sit here. The seat is free.

a) must b) may c) has to d) should

12. It is the least interesting book I have ever read. It is so…

a) boring b) fascinating c) exciting d) enjoyable

13. In a different job he could get a higher salary and better conditions of….

a) employed b) employment c) employer d) employable

14. To be responsible…

a) of b) to c) in d) for

15. I’m awfully sorry. I’ve torn your book.

a) You are welcome b) That doesn’t matter

c) I don’t like reading now d) I wish I could but I can’t

16. We’ve got to take…all the portraits in the classroom and dust them.

a) down b) up c) into d) on

17. Ken has always had…for horror stories. There are thousand of them in his bedroom.

a) an entertainment b) an excitement c) a fascination d) an impression

18. Most species of wildlife are endangered. Large areas of jungle are…too.

a) threatened b) beaten c) ruined d) despised

19. I can’t find my umbrella. I think somebody (take) by mistake.

a) took b) takes c) has taken

20. While my son (wait) for my call, somebody knocked at the door.

a) waited b) was waiting c) is waiting

21. After I (write) all my letters, I went to the kitchen to make coffee.

a) wrote b) had written c) write
- Предмет:
  Английский язык
- Автор:
  luci
- 5 лет назад
- Ответов:
  
  1
- Смотреть
звука буквеный разбор слова герб
- Предмет:
  Русский язык
- Автор:
  britneystafford
- 5 лет назад
- Ответов:
  
  2
- Смотреть
как сказать по англиски жаль , что я не ответил раньше , но я получил письмо две недели назад.
- Предмет:
  Английский язык
- Автор:
  harvey92
- 5 лет назад
- Ответов:
  
  3
- Смотреть

How much to ban the user?

1 hour 1 day 100 years