Предмет: Алгебра, автор: AleksandrovnaФ82

в выражение x - y - 1 подставьте x = ab + 1 y = ab -1 и выполните преобразование

Ответы

Автор ответа: яВиктория

ab+1 - (ab - 1) - 1 = ab+1 - ab +1 - 1 = 1

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