$latex \displaystyle \frac{{-b\pm \sqrt{{{{b}^{2}}-4ac}}}}{{2a}}+\sqrt{{{{b}^{2}}-4ac}}=\tfrac{1}{3}-\sqrt{{3\sqrt{{{{a}^{2}}+{{b}^{2}}}}}}$
$latex \displaystyle \frac{{-b\pm \sqrt{{{{b}^{2}}-4ac}}}}{{2a}}+\sqrt{{{{b}^{2}}-4ac}}=\tfrac{1}{3}-\sqrt{{3\sqrt{{{{a}^{2}}+{{b}^{2}}}}}}$