2log 8 - 5log 125 - 9log 81

2log 8 – 5log 125 – 9log 81

Lihat di rumus pertama dan ketiga

${ : }^{2} log(8) - { : }^{5} log(125) - { : }^{9} log(81) \ = { : }^{2} log( {2}^{3} ) - { : }^{5} log( {5}^{3} ) - { : }^{9} log( {9}^{2} ) \ = (3 times { : }^{2} log(2)) - (3 times { : }^{5} log(5)) - (2 times { : }^{9} log(9)) \ = 3 - 3 - 2 \ = - 2$

Gambar Jawaban