Jika 3log125 x 5log81 - 5log625 adalah

Bab Logaritma
Matematika SMA Kelas X

³log 125 . ⁵log 81 - ⁵log 625
= ³log 81 . ⁵log 125 - ⁵log 5⁴
= ³log 3⁴ . ⁵log 5³ - 4 . 1
= 4 . 1 . 3 . 1 - 4
= 12 - 4
= 8

[tex] ^3log125 \times ^5log81 - ^5log625 \\ = ^3log5^3 \times ^5log3^4 - ^5log5^4 \\ = 3.^3log5 \times 4.^5log3 - 4 \\ = 3.4.^3log5.^5log3 - 4 \\ = 12 - 4 \\ = 8 [/tex]