`2 log_10 5 + log_10 8 - 1/2\ log_10 4=?` a. `2` b. `4` c. `2+2 log_10 2` d. `4 - 4 log_10 2`

log4^2_10 + log4_10

2log_(10)5+log_(10)8-(1)/(2)backslash log_(10)4=? a.2 b.4 c.2+2log_(10)2 d.4-4log_(10)2

log_(10)3+log_(10)2-2log_(10)5

Given that log_10 2=.3010 , log_10 3=.4771 , log_10 4=.6021 , log_10 7=.8450 , log_10 10=1 ,then prove that log_8 140=2.3764

Given that log_10 2=.3010 , log_10 3=.4771 , log_10 4=.6021 , log_10 5-.6990 , log_10 10=.7782 ,then prove that log_2 6=2.5854

Given that log_10 2=.3010 , log_10 3=.4771 , log_10 4=.6021 , log_10 5-.6990 , log_10 10=.7782 ,then prove that log_4 9=1.5848

Given that log_10 2=.3010 , log_10 3=.4771 , log_10 4=.6021 , log_10 5-.6990 , log_10 10=.7782 ,then prove that log_5 72=2.6572

Given that log_10 2=.3010 , log_10 3=.4771 , log_10 4=.6021 , log_10 5-.6990 , log_10 10=.7782 ,then prove that log_6 45=2.1244

Given that log_10 2=.3010 , log_10 3=.4771 , log_10 4=.6021 , log_10 5-.6990 , log_10 10=.7782 ,then prove that log_9 96=2.0774

Given that log_10 2=.3010 , log_10 3=.4771 , log_10 4=.6021 , log_10 7=.8450 , log_10 10=1 ,then prove that log_7 90=2.3124