log12 1440- log12 10+ 3log9 16

Решение тут...............................

㏒12(1440)-㏒12()10+㏒9(16)=㏒12(1440\10)+㏒9(16³)=㏒12(144)+㏒9(4096)=2+㏒9(4096)=㏒9(81)+㏒9(4096)=㏒9(81·4096)=㏒9(331776)