Предмет: Математика, автор: Giningkev

Знайти* х2+4х-5=0
Срочно

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Автор ответа: Аноним

1

Пошаговое объяснение:

По дискриминанту

D=16+20=36

√D=√36=6

$x1 = \frac{ - 4 - 6}{2} = - \frac{10}{2} = - 5\\ x2 = \frac{ - 4 + 6}{2} = 1$

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