[tex]\displaystyle\bf\\Folosim~formula:~~~10!=9!\times10\\\\Rezolvare:\\\\(10!+9!):(10!-9!)=\\\\=\frac{10!+9!}{10!-9!}=\\\\\\=\frac{9!\times10+9!}{9!\times10-9!}=\\\\\\=\frac{9!(10+1)}{9!(10-1)}=\\\\\\=\frac{(10+1)}{(10-1)}=\\\\\\=\frac{11}{9}=\\\\\\=11:9=1~rest 2\\\\Raspuns:~~\boxed{\bf Restul~impartirii~este~2\times9!~}[/tex]