Предмет: Алгебра, автор: TheOlgaGame1

найдите координаты точек пересечения параболы у=-х² и прямой у=-9

Ответы

Автор ответа: NSСупер

Приравниваем уравнения. . x^2-15-2x-9=0 x^2-2x-24=0 D=10^2 x1=6. x2=-4 Ну и подставляем вот это в уравнения.. . Получаются точки пересечения.. . (6.21) и (-4,1)

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