Log 9 121+2 log 9 (9\11)

Question

Log 9 121+2 log 9 (9\11)

Answer 1

Log 9 (12) + log 9 ((9/11)^2)
log 9 (121 •(9/11)^2)
log 9 ( 11^2 • (9^2/11^2)
log 9 (81)
log 9 (9^2)
Ответ: 2