4*log1,25 ( 5 ) * log5 ( 0,8 )

Question

4*log1,25 ( 5 ) * log5 ( 0,8 )

Answer 1

4*log1.25(5)*log5(0.8)=4*log10/8(5)*log5(8/10)= (-4)log8/10(5)*log5(8/10)=((-4)log5(8/10))/log5(8/10)= (-4)