4log 9 x 3log 125 x 25 log 16

4log 3^2 x 3log 5^3 x 5^2 log 4^2
4log 3^2 x 3log 5^3 x 5log 4
2x3 x 4log 4
6

=2²log3² x 3log5³ x 5²log4²
=[tex] \frac{2}{2} [/tex].2log3 x 3.3log5 x 5log4
=2log3 x 3.3log5 x 5log4
=3.(2log5 x 5log4)
=3.2log4
=3.2log2²
=3.2
=6