6 log 100 - 6 log 25+6 log 9+ 5 log

6 log 100 - 6 log 25+6 log 9+ 5 log 1

6 log 100 - 6 log 25+6 log 9+ 0

6 log 100 - 6 log 25+6 log 9

6log (100/25×9)

6log (4 ×9)

6log 36

6log (6^2)

2 × 6log 6

2 ×1

2

⁶log100 - ⁶log25 + ⁶log9 + ⁵log1
= ⁶log(100/25) + ⁶log9 + 0
= ⁶log4 + ⁶log9 + 0
= ⁶log(4.9) + 0
= ⁶log36 + 0
= ⁶log6² + 0
= 2.⁶log6 + 0
= 2.1 + 0
= 2 + 0
= 2