Tentukan nilai dari a.5log 625 b.2log 8+3log 9+5log 125

5log625 = 4
2log 8+ 3log9+ 5 log 125 = 3+2+3= 8

A
[tex] 5_{log 625} = 5_{log 5^{4}} = 4 (5_{log 5}) = 4 (1) = 4[/tex]

B
[tex] 2_{log 8} + 3_{log 9} + 5_{log 125} \\ = 2_{log 2^{3}} + 3_{log 3^{2}} + 5_{log 5^{3}} \\ = 3 (2_{log 2}) + 2 (3_{log 3}) + 3 ( 5_{log 5}) \\ = 3 (1) + 2 (1) + 3 (1) \\ =8[/tex]