Предмет: Алгебра, автор: ikelarev1995

Найдите допустимые значения переменной в выражениях: y+5/y²-9

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Автор ответа: rubilovalex

выражение имеет смысл, если знаменатель не равен 0. получаем : y^2-9=0; (y-3)*(y+3)=0; y-3=0 или y+3=0; y1=3, y2= -3. Ответ: y не должен равняться 3 и (-3).

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