Найдите значение выражения a2-16/5a2-20a при a=-0,4 - №17788824

Найдите значение выражения a2-16/5a2-20a при a=-0,4
- Предмет:
  Алгебра
- Автор:
  hot saucemxdh
- 5 лет назад

Ответы 1

сначала упростим:(а-4)(а+4)/5а(а-4)=а+4/5а-0,4+4/5*(-0,4)=3,6/-2=-1,8
- Автор:
  sheba
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

имеются 2 прямоугольника одинаковой площади.ширина первого 22см длина на 45см а длина второго 33 см.какова ширина второго прямоугольника?
- Предмет:
  Математика
- Автор:
  patiencemiddleton
- 5 лет назад
- Ответов:
  
  3
- Смотреть
какую почву называют хорошей?
- Предмет:
  Окружающий мир
- Автор:
  donato
- 5 лет назад
- Ответов:
  
  0
- Смотреть
какие высказывания-предложения можно составить по этим схемам
- Предмет:
  Русский язык
- Автор:
  jethrogijp
- 5 лет назад
- Ответов:
  
  3
- Смотреть
Помогите пожалуйста! Нужно вставить: can, could, be able to, must , may
23. My grandfather was a very clever man. He ... speak five languages.
When you come to Minsk again, you ... come and see us.
24. Jim gave me a letter to post. I ... remember to post it.
25. "You ... finish this work later", the teacher said to the pupils.
26. ... I have one of these cakes?
27. Which is (high) mountain in the world?
28. In my opinion The Swan Lake is (good) ballet I ever (see).
29. The (much) you read, the (little) you forget.
30. I think you could do it (good) than me, but you (not, do) anything at all.
31. This is (easy) problem which I have ever sold.
32. Don't hurry to the cloak-room (at, in, by) the end of the performance.
33. Don't cross the street, stop (at, by, in) the traffic lights.
34. Do exercises (on, in, at) page 10, ... ?
35. Have you ever been (to, at, in) London? - I'm going (at, to, in) London in a week.
36. (On, in, at) my working days I don't go (to, in, at) the theatre, I like to stay (at, in, -) home (in, on, at) the evening.
37. We like (our, ours) new flat very much, it's much (good) than our old one.
38. Have you got (many, much, little) friends here? - Alex is (good) friend of (my, mine).
39. I don't see (anybody, nobody) at the bus stop. - The last bus already (leave).
40. Have you read (anything, something) by Shakespeare?
41. Will you have (some, any) tea? - No, thanks.
42. Jane's sister has ... family of her own. She has ... husband and two children, ... son and ... daughter. ... children are ...twins.
43. My brother is 16. He goes to ... school. He is in ... 10th form. - He is ... hard-working, clever boy.
44. She lives in ... big house in ... Oxford Street not far from ... store where she works.
a/an the -
- Предмет:
  Английский язык
- Автор:
  lindsaya8h0
- 5 лет назад
- Ответов:
  
  0
- Смотреть

How much to ban the user?

1 hour 1 day 100 years