Предмет: Алгебра, автор: lokigod1303

проверьте на ошибки

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Автор ответа: sangers1959

1

Ответ:

Объяснение:

в)

14x²+7x=0

7x*(2x+1)=0 |÷7

x*(2x+1)=0

x₁=0 x₂=-1/2

г)

x+7/x=-8 |×x ОДЗ: x≠0.

x²+7=8x

x²+8x+7=0 D=36 √D=6

x₁=-1 x₂=-7.

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