решите уравнение 5x²+22x+8=0. Created by valeksandrova928. matematika-ru

решите уравнение 5x²+22x+8=0...

valeksandrova928 @valeksandrova928

August 2022 1 24 Report

решите уравнение 5x²+22x+8=0

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vulka54

Ответ:

Х1=-0,4

Х2=-4

Пошаговое объяснение:

$5x {}^{2} + 22x + 8 = 0 \\ d = 22 {}^{2} - 4 \times 5 \times 8 = 324 \\ \sqrt{324} = 18 \\ x1 = \frac{ - 22 + 18}{5 \times 2} = - 0.4 \\ x2 = \frac{ - 22 - 18}{10} = - 4$

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valeksandrova928 July 2022 | 0 Ответы

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