Question

log₅10+log₅ 25/4 - log₅2,5 

Answer 1

$log_{5}10+log_{5} frac{25}{4} -log_{5}2,5=log_{5}(10* frac{25}{4})- log_{5}2,5= \ log_{5}62,5-log_{5}2,5=log_{5}(62,5:2,5)=log_{5}25=2$