Jika  2 log 5= a dan 3 log 2=b. maka 6 log 50 =

6 log50 => 2.3 log2.25 => 2.3 log 2+ 2.3 log 25 => 3 log 2.2 + 2 log 25×3 => b.2+2 log 5.5.5(25.3=75 => 5.5.5) => 2b + (2 log 5 + 2 log 5 + 2 log 5) => 2b +  3a