Question Number 97386 by Farruxjano last updated on 07/Jun/20
Commented by Farruxjano last updated on 07/Jun/20
$$\boldsymbol{{When}}\:\boldsymbol{{you}}'\boldsymbol{{ve}}\:\boldsymbol{{got}}\:\boldsymbol{{a}}\:\boldsymbol{{little}}\:\boldsymbol{{time}}, \\ $$$$\boldsymbol{{please}},\:\boldsymbol{{help}}\:\boldsymbol{{sir}}:\:\boldsymbol{{mr}}\:\boldsymbol{{W}} \\ $$
Commented by mr W last updated on 07/Jun/20
$${i}\:{have}\:{no}\:{good}\:{way}\:{to}\:{prove}\:{it}. \\ $$$${but}\:{i}\:{think} \\ $$$$\sqrt{...}+\sqrt{...}\leqslant\frac{\mathrm{8}\sqrt{\mathrm{3}}}{\mathrm{9}}\approx\mathrm{1}.\mathrm{539} \\ $$