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Автор - sasaselivanov34

найдите на окружности
x {}^{2}  + y { }^{2}  = 58
точки с абсциссой (-3)

Ответ

Автор - kseaf2003
Подставляем -3 в уравнение.
(-3)^2 + y^2 = 58
9 + y^2 = 58
y^2 = 49
y = +-7
Значит, точки будут (-3;7) и (-3;-7)

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