Предмет: Алгебра, автор: alinakrainikova

По какому принципу решать? ​

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Ответы

Автор ответа: sangers1959
1

Ответ: при x₁=-7 и x₂=3 дробь не имеет смысла.

Объяснение:

(x-2)/(x²+4x-21)     ⇒

x²+4x-21≠0     D=100     √D=10

x₁≠-7     x₂≠3.

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