Question

log(a)500-log(a)4; log(5)a=14

Answer 1

log(5)a=1/log(a)5=1/4⇒log(a)5=4
log(a)500-log(a)4=3log(a)5-2log(a)2-2log(a)2=3log(a)5=3*4=12