Предмет: Математика, автор: fedorgirba

Довести тотожність
А*(А+В)=В

Ответы

Автор ответа: ivashkaromanets31080

0

Ответ:

A*(A+B) =B

A2+B=B

A2+B-B=0

A2=0

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: Клубничка7777

Помогите пожалуйста!Отблагодарю и спасибо поставлю!

1. Look! Nick’s sister ______ for a walk in the evening.
a) goes b) is going c) have gone d) went
2. He ______ warm clothes every winter.
a) wear b) is wearing c) were d) wears
3. My little sister _____ her glass of milk yet.
a) are not drinking b) have not drunk c) has not drunk d) not drinks
4. ‘We ______ all the bananas at last!’ he said yesterday.
a) ate b) have eaten c) has eaten d) eat
5. What ____ you ____last Sunday?
a) will, buy b)do, buy c)did, buy d) have , bought
6. What __ this word ____ ?
a) does, mean b) do, mean c) is, meant d) has, meant
7. ______ she ______ yet?
a ) Have, gone b) Did, go c) Will, go d) Has, gone
8. - ____ I watch TV?
- ____ It’s time to sleep.
a) Can; Yes, you must. b) May; Yes, you may. c) Shall; No, you shan’t. d) May; No, you mustn’t.
9. I have French classes every day. I’m sure I ______ speak French very well in a few months.
a) shall be able to b) am able c) will be able d)could
10. Yesterday she had her birthday party. We ____ late.
a) did have to be b) had to be c) didn’t have to be d) hadn’t been
11. There is ____ milk in the cup. Give me _____ milk.
a) much, a few b) little, some c) few, a few d) little, any
12. There are _____ pupils in the class who can speak English well: only Mary and me.
a) few b) a few c) much d) little
13. - ____ you at the theatre with your class three days ago?
- Yes, I ____.
a) Was, did b) Were, was c) Were, did d)Were, were
14. When _____ Prince Yuri ______ Moscow?
a) have, founded b) did, found c) did, find d) has, found
15. Nature ______ help because ____ is ____ danger.
a) need, she, at b) needing, it, in c) needs, it, in d) needs, its, on

2 года назад

Предмет: Русский язык, автор: lydmila8879

словосоченание со словом горестно

2 года назад

Предмет: Русский язык, автор: salnikova2

посинел
разбор по составу

2 года назад

Предмет: Математика, автор: Элен111111111

помогите пожалуйста решить выражение
((3ц+8т8ц):13-20кг)×5-2т

9 лет назад

Предмет: История, автор: semenova1276

1. Как и кем управлялась Русь при монголах. Можно ли сказать, что Русь была самостоятельна?

9 лет назад