Предмет: Алгебра, автор: mariaudovkina359

для яких значень x вираз 10-2x набуває додатних значень

nazar1234457: можите помоч с украинским

Ответы

Автор ответа: nazar1234457

0

Ответ:

х2+4х+5=x2+4x+4+1=(x+2)2+1≥1, бо (x+2)2≥0.

(x+1)2+1=1 при х=-2.

Объяснение:

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