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Автор - gagarinanatali

решите систему х^2+у^2=9; у+х+3=0

Ответ

Автор - xxxsonarxxx616

Ответ:

x2+y2=9

x=-y-3

(-y-3)2+y2=9

y=0

y=-3

x =-0-3

x=-(-3)-3

x=-3

x=0

(x1, y1) =(-3,0)

(x2,y2)=(0,-3)

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