Question Number 212231 by Davidtim last updated on 07/Oct/24
$$\sqrt{\mathrm{2}+\sqrt{\mathrm{2}+\sqrt{\mathrm{2}+\sqrt{\mathrm{2}{cos}\mathrm{8}{x}}}}}=? \\ $$
Commented by Davidtim last updated on 07/Oct/24
$${please}\:{help}\:{me} \\ $$
2-2-2-2cos8x-