5*7-\sqrt{9*7*7}+\sqrt{2*7*7}= 35-3*7+7\sqrt{2}=35-21+7\sqrt{2}=
14+7\sqrt{2}" alt="5\sqrt{7}*\sqrt{7}-\sqrt{63}*\sqrt{7}+\sqrt{14}*\sqrt{7}=
5*7-\sqrt{9*7*7}+\sqrt{2*7*7}= 35-3*7+7\sqrt{2}=35-21+7\sqrt{2}=
14+7\sqrt{2}" align="absmiddle" class="latex-formula">