Question

$\sqrt{ \sqrt{15 + }10 \sqrt{2} } + \sqrt{ \sqrt{15} - 10 \sqrt{2} }$
​

Answer 1

Step-by-step explanation:

$\sqrt[4]{5}\left(\sqrt{\sqrt{2}+1}+\sqrt{-\left(1-\sqrt{2}\right)}\right)\approx 3.2858319$