х0=-b/(2a)=4/-2=-2
y0=-D/(4a)=-(16-4*(-1)*0)/4=-16/-4=4
Ответ: (-2;4)
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х0=-b/(2a)=4/-2=-2
y0=-D/(4a)=-(16-4*(-1)*0)/4=-16/-4=4
Ответ: (-2;4)