<prompt> Tafuta log_2 x2 ikiwa log_2 log_8 x log_8 log_2 x.  <response>: Ili kuanza kuondoa logariti, tunaongeza 8 kwa uwezo wa pande zote mbili, tukitoa 8log_2log_8 x 8log_8log_2 xau 2 3log_2log_8 x 8log_8log_2 x,hivyo log_8 x3 log_2 x. Sasa, kwa mabadiliko-ya-msingi formula, log_8 x fraclog_2 xlog_2 8 fraclog_2 x3, kwa hivyo tuna leftfraclog_2 x3 kulia3 log_2 x.Hivyo log_2 x2 33 27. 