х(х+6)=432 розв`яжіть

х(х+6)=432 розв`яжіть
- Предмет:
  Математика
- Автор:
  jaceyvia2
- 6 лет назад

Ответы 1

x(х+6) = 432;
x² + 6x - 432 = 0;
I спосіб (за допомогою т. оберненої до т. Вієта)
х₁ = 18; х₂ = -24.
ІІ спосіб (загальний спосіб)
D = b² - 4ac = 36 - 4 · 1 · (-432) = 36 + 4 · 432 = 4(9 + 432) = 4 · 9 · (1 + 48) = 4 · 9 · 49; √D = 2 · 3 · 7 = 42.
x₁ = (-6 + 42)/2 = -3 + 21 = 18; x₂ = -3 - 21 = -24.
Відповідь: 18; -24.
- Автор:
  edgar91
- 6 лет назад
- 0
Добавить свой ответ

Еще вопросы

тоджество (a-b)-(b-a)=0
- Предмет:
  Математика
- Автор:
  bailey69
- 6 лет назад
- Ответов:
  
  1
- Смотреть
Срочно!!!!!
Составте формулу щелочи или кислоту углерода (C)
И формулу летучего водородного (C)
Заранее спасибо;)
- Предмет:
  Химия
- Автор:
  hectorstephens
- 6 лет назад
- Ответов:
  
  2
- Смотреть
Раскройте скобки, употребляя глаголы в одном из следующих времен: Present Continuous, Present Simple, Past
Simple или Future Simple.

1. I (to think) Nellie (to leave) for Moscow tomorrow. 2. I
(to be) in a hurry. My friends (to wait) for me. 3. You (to be) at the theatre
yesterday. You (to like) the opera? — Oh yes, I (to enjoy) it greatly. 4. We
(to expect) you (to go) to London
next summer. 5. Her English (not to be) excellent, but she (to work) at it. 6. A week ago they (not to
know) what to think. 7. She (to worry) a lot at the moment, but the problems
(not to be) very great. 8. Last Tuesday he (to be) upset and (to have) no idea
where to go. 9. Could you tell me the way to Trafalgar Square? I (to go) the
right way? 10. Various kinds of sports (to be) popular in Russia. 11. Both
children and grown-ups (to be) fond of sports. 12. What (to be) the matter with
her? She (to be) so excited. — I (not to know). 13. Where you (to go)? — I (to
go) to the stadium to see the match which (to take) place there today. 14. You
(to know) that a very interesting match (to take) place last Sunday? 15. He (to
go) to the south a week ago. 16. When I (to be) about fifteen years old, I (to
enjoy) playing football. 17. Our football team (to win) many games last year. 18.
Where (to be) Boris? — He (to play) chess with his friend. 19. I (to be) sorry
I (to miss) the match yesterday. But I (to know) the score. It (to be) 4 to 2 in favour of the Russian
team.
- Предмет:
  Английский язык
- Автор:
  ericabates
- 6 лет назад
- Ответов:
  
  1
- Смотреть
Помоги пожалуйста
Ex.7 Put the verb "to be" into the appropriate tense form:
1. Last year I... in form 10.
2. Alex... Dima's best friend.
3. Nika Dima's cousin?
4. The boys frequenters of "Orbita".
5. Next year she a first-year student.
6 The school... in the centre of Irkutsk.
7. In 5 years my Dad... 40.
8. you at the club yesterday?
9. They going to enter the Baikal university.
10. You not a student yet, ...you?
11. What your sister interested in?
12. Dima, Alex and Nika not at home now,... they?
- Предмет:
  Английский язык
- Автор:
  dinosaur
- 6 лет назад
- Ответов:
  
  1
- Смотреть

х(х+6)=432 розв`яжіть

Ответы 1

Топ пользователей