Предмет: Алгебра, автор: mrletnik

Задание №3 (с решением, пожалуйста)

Приложения:

Ответы

Автор ответа: eblannahyu245145
1

Ответ:

(x+2)²-49=0

x²+4x+4-49=0

x²+4x-45=0

D=4²-4*1*(-45)=16+180=196, √196=14

x₁=-4+14/2=10/2=5

x₂=-4-14/2=-18/2=-9

Объяснение:

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