Предмет:
МатематикаАвтор:
анонимВыполним умножение и вычислим значение выражения:
(6 − 1) * (6 + 1) * (6^2 + 1) * (6^4 + 1) * (6^8 + 1) − 6^16 + 29;
Применим формулу сокращенного умножения разности квадратов.
(6^2 - 1^2) * (6^2 + 1) * (6^4 + 1) * (6^8 + 1) − 6^16 + 29;
(6^2 - 1) * (6^2 + 1) * (6^4 + 1) * (6^8 + 1) − 6^16 + 29;
(6^4 - 1^2) * (6^4 + 1) * (6^8 + 1) − 6^16 + 29;
(6^4 - 1) * (6^4 + 1) * (6^8 + 1) − 6^16 + 29;
(6^8 - 1) * (6^8 + 1) − 6^16 + 29;
6^16 - 1 - 6^16 + 29;
-1 + 29 = 29 - 1 = 28.
Ответ: 28.
Автор:
mikaylaa3jsДобавить свой ответ
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Task 4.Find the words or phrases in the text that mean the following:
1) to stop something from happening or to stop someone from doing something;
2) not to pay money that you must pay;
3) to limit something;
4) to describe something in the wrong way or to give false information about something;
5) to do something unpleasant to someone because they have done something illegal or wrong;
6) when someone in authority take your things away from you;
7) to make food or drink go down your throat and into your stomach;
8) when people in authority do not allow it;
9) to secretly bring something into a country when it is illegal to do it;
10) to hide something;
Answer the following questions:
1. What are the duties of a Customs officer?
2. Have you ever gone through a Customs inspection? If so, share your experience.
3. What is a duty-free item?
4. What do we mean by saying that something is an item liable to duty?
5. Why is smuggling punishable by law?
6. What does the Customs Inspected stamp stand for?
7. Can you name some of the «personal effects» one usually takes along on a journey?
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