Question

Log5 100-log5 40+log 5 5^3

Answer 1

$log_{5}100- log_{5}40+ log_{5}5^3= log_{5} \frac{100}{40}+3= log_{5} \frac{5}{2}+3= log_{5}5- log_{5}2+ \\ +3=1- log_{5}2+3=4- log_{5}2$

Answer 2

Log5 100-log5 40+log 5 5^3
Log5 100 = log5 25 * log5 4
Log5 40 = log5 5 * log5 8
Log5 5^3 = 3....

Log5 25* log5 4 - log5 5 * log5 8 + 3
2*log5 4 - log5 8 + 3