Предмет: Алгебра, автор: Quinur

Выполняя задания, необходимо записать не только ответ, но и подробное решение.

Задание 1
Раскройте скобки и упростите выражение:
(первый файл)

Задание 2
Докажите тождество:
(второй файл)

Задание 3.
(третий файл)
а) Максимально упростите выражение
б) Найдите значение упрощённого выражения a = -(3/4); b = 0,25 (10 баллов).

Приложения:

Ответы

Автор ответа: nastyadura13

задание 1

-4/18(2 7/10a-1,5b)- 5/6(0,48a- 2b)

-2/9(27/10a-3/2b)- 5/6(12/25a- 2b)

-3/5a+1/3b-2/5a-5/3b

-a-2b

завтра добавлю остальное

nastyadura13: простите( так уж получилось что забыла

Mangyst007: это правильно?

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The Climate of Great Britain (1)

Great Britain is situated on islands. It is washed by seas from all sides. That's why the climate and the nature of Great Britain are very specific. The popular belief that it rains all the time in Britain is simply not true. In fact, London gets no more rain in a year than most other major European cities. Generally speaking, the further west you go, the more rain you get. The mild winters mean that snow is a regular feature of the higher areas only. The winters are in general a bit colder in the east of the country than they are in the west. While in summer, the south is slightly warmer and sunnier than the north. Besides Britain is famous for its fogs. Sometimes fogs are so thick that it is impossible to see anything within 2 or 3 metres.
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