Предмет: Алгебра, автор: HelL224

Помогите плз 34 балла

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Автор ответа: Аноним

$\frac{ {2b}^{2} + 2b}{ {b}^{2} - 1} = \frac{2b(b + 1)}{(b - 1)(b + 1) } = \frac{2b}{b - 1} .$

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Удачи✨)))))

Автор ответа: russik160

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