已知实数a,b,c满足abc=-1,a+b+c=4,a/(a^2-3a-1)+b/(b^2-3b-1)+c/(c^2-3c-1)=4/9,则a^2+b^2+c^2=?

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已知实数a,b,c满足abc=-1,a+b+c=4,a/(a^2-3a-1)+b/(b^2-3b-1)+c/(c^2-3c-1)=4/9,则a^2+b^2+c^2=?
已知实数a,b,c满足abc=-1,a+b+c=4,a/(a^2-3a-1)+b/(b^2-3b-1)+c/(c^2-3c-1)=4/9,则a^2+b^2+c^2=?

已知实数a,b,c满足abc=-1,a+b+c=4,a/(a^2-3a-1)+b/(b^2-3b-1)+c/(c^2-3c-1)=4/9,则a^2+b^2+c^2=?