(1) 6'Log 36+4'Log 64-2'Log 64 (2) 5'Log 625+4'Log 2-3'Log 9 (3) 3'Log 125×4'Log 27×5'Log 16 (4) 2'Log 81×5'Log 32×9'Log 25

1. 6'Log 36+4'Log 64-2'Log 64
=2+3-6
=-1

2. 5'Log 625+4'Log 2-3'Log 9
= 4+1/2-2
=2 1/2

3. 3'Log 125×4'Log 27×5'Log 16
=3 log 5 pangkat 3 x 3/2 2 log 3 x 5 log 2 pangkat 4
= 3 kali 3 log 5 x 4 kali 5 log 2 x 3/2 kali 2 log 3
=3 kali 4 kali 3/2 x 3 log 5 x 5 log 2 x 2 log3
=18 x 3 log2 x 2 log3
= 18 3log 3
=18

4. 2'Log 81×5'Log 32×9'Log 25
= 2 log 3 pangkat 4 x 5 log 2 pangkat 5 x 3 pangkat 2 log 5 pangkat 2
=4 kali 2 log 3 x 5 kali 5 log 2 x 2/2 kali 3 log 5
= 4 kali 5 kali 2/2 x 2 log 3 x 3 log 5 x 5 log 2
= 20 x 2 log 5 x 5 log 2
=20 2 log 2
=20