Предмет: Алгебра, автор: Яуа

Представьте в виде произведения выражение (a+b-c)^2 - (a-b+c)^2

Ответы

Автор ответа: shumilovvi

(а+в-с)^2-(а-в+с)^2=(а+в-с-а+в-с)(а+в-с+а-в+с)=(2в-2с)2а=(в-с)4а

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СРОЧНО НУЖНО ОТВЕТИТЬ НА ВОПРОСЫ
Jack and the beanstalk
This is the story of a little boy. His name is Jack. Jack lives with his mother. They are poor. They have got a goat, but the goat doesn’t make any milk. Jack takes the goat to the market. A good man sees Jack and the goat. He gives Jack some beans. "These are magic beans," says the good man. Now Jack is happy.
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1. What sort of boy is Jack?
2. Where does Jack meet the old man?
3. Where does Jack’s mother throw the beans?
4. Whose gold coins has got a bad giant?
5. What does Jack do when he climbs down the beanstalk?

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