Предмет: Алгебра, автор: cjfgk1

почему из минус корень из двух извлечь корень?

Ответы

Автор ответа: ewgenijbark

- √2 ≈ - 1,4это можно сделать, т.к. подкоренное выражение положительно (2>0)
а вот √ -2 в действительных числах уже не имеет смысла, т.к. корень можно брать из неотрицательных чисел.

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