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Kikamor13

Ответ:

Пошаговое объяснение:

F(x)=19/1+x2

F(x)=19+x2

F(x)-19-x2=0

-F(x)+19+x2=0

x2-F(x)+19=0

D=(-F)2-4×1×19

D=F2-76

F2-76>0

F2-76=0

F2-76<0

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