Question

Sederhanakanlah
A. Log 20 + log 30 - log 6
B 3^ log 1/9 + 3^ log 27 + 3^ log 81
C 3 log 9 - 2 log 3 + log 5

Answer 1

<a>
log (20x30:6)= log 100= 10

<b>
3'log (1/9 x 27 x 81) = 3'log 243= 3'log 3^5 = 5 (3'log 3)= 5

<c>
log 9^3 - log 3^2 + log 5
log (9^3 x 5 : 3^2) = log 405