dengan cara nya 1.5log125 2.3log1per27 3.log21 4.log18

Logaritma

1][
5 log 125
= 5 log 5^3
= 3 . 5 log 5
= 3 . 1
= 3

2][
3 log 1/27
= 3 log 1/3^3
= 3 log 3^-3
= -3 . 3 log 3
= -3 . 1
= -3

3][
log 21
= 1,3222

4][
log 18
= log 2 x 9
= log 2 + log 9
= log 2 + 3 log 3
= log 2 + 1
= 0,3 + 1
= 1,3