log5 4 = a log 5 3=b log25 12=?

Question

log5 4 = a

log 5 3=b

log25 12=?

Answer 1

log₅4=a;

log₅3=b;

 

log₂₅12=0,5*log₅12=0,5*(log₅4+log₅3)=0,5(a+b).