Предмет: Алгебра, автор: bhggfgfkjyf223

Номер 10, 12. Пожалуйста!

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Автор ответа: litanalove

0

10. b²/(b²+bc) =b²/b(b+c) =b/(b+c)

12. (x² -y²)/(x² -xy) =(x -y)(x+y) /x(x -y) =(x+y)/x

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