Предмет: Алгебра, автор: Typical111

Застосувати правило 1 або 2
(х+2)²-(х-2)²
1 правило: Різниця квадратів двох виразів дорівнює добутку різниці цих виразів та їхньої суми. приклад а²-b²=(a-b)(a+b)
2 правило: Добуток різниці двох виразів та їхньої суми дорівнює різниці квадратів цих виразів. приклад (a-b)(a+b)=a²-b²

Ответы

Автор ответа: Ivan19074
0

Ответ:

8x

Объяснение:

(x+2)^2 - (x-2)^2 = (x+2-(x-2))(x+2+(x-2)) = 4(2x) = 8x


Typical111: та у меня тема "Формулы сокращённого умножения"
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Task 1 Fill in with there is/there are
1. There _____ thirty students in my class.
2. There _____ some books in my bag.
3. There _____ some computers in the library.
Task 2 Fill in the appropriate modal verb: must/mustn’t/have to/has to/don’t have to:
1. Visitors to the zoo __________ feed the animals. It is not allowed.
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3. You _________ to wear a tie if you want to go to that restaurant. It's one of their rule!
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Task 3 Fill in too or enough.
1) I don't like this coffee. It's not ______________ (sweet).
2) Nobody could move the piano. It was _______________ (heavy).
3) We couldn't climb over the wall. It was _______________(high).
4) I don't wear this jacket in winter. It isn't _______________ (warm).
Task 4 Underline the correct variant.
1) There's someone/anyone at the door.
2) Does anybody/anything remember him?
3) There's nowhere/nothing you can do.
4) I've seen you something/somewhere before.
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6) Somebody/Anybody broke the mirror in the bathroom.
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