Log9 15 + log9 18 - 2log9sqrt10

Question

Log9 15 + log9 18 - 2log9sqrt10

Answer 1

Log_9 15 + log_9 18 - 2log_9 √10= Log_9 15 + log_9 18 - log_9 √10² =

=Log_9 (15) + log_9 (18) - log_9(10)=Log_9 15*18:10=Log_9 27 =

= Log_3² (3³)=3/2Log_3 (3)= 3/2 =1,5