Question

как можно быстрее решите

Answer 1

$1) \sqrt{18} + \sqrt{7} \ \textgreater \ 5\\ 4\ \textless \ \sqrt{18} \ \textless \ 5\\ \sqrt{18} =4,5\\ 2\ \textless \ \sqrt{7}\ \textless \ 3\\ \sqrt{7} =2,5=\ \textgreater \ 4,5+2,5\ \textgreater \ 5 [+ ]\\3) \sqrt{18+7} \ \textless \ 5\\ \sqrt{25} \ \textless \ 5\\5\ \textless \ 5[-]\\2) \sqrt{18^2+7^2} =5] \sqrt{324+49} =5\\ \sqrt{373}=5[-] \\4) \sqrt{18} - \sqrt{7} =5\\4,5-2,5=5\\2 \neq 5$