Предмет: Алгебра, автор: igorsviridenko233

При каких значениях параметра а число 4 является корнем уравнения x^2-ax-28=0

Ответы

Автор ответа: SmartCin4376

0

Ответ:

-3

Объяснение:

x = 4

16 -4a -28 = 0

4a = -12

a = -3

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