Предмет: Математика, автор: onthefly1999

Упростите пожалуйста 4 пример

Приложения:

Ответы

Автор ответа: miron2077

исходное не пишу, раскрываем скобки:
с²-2св+с+с²+2св+в²-с²-с=с²+в²

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Q1 - The man who serves you in a restaurant is the ........
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main course
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