Tolong jawab yang nomer 3 nya aja yah!?

3.
[tex] \frac{25^ \frac{3}{2}. \sqrt{64^{2}} }{64^ \frac{1}{3} . 25^ \frac{1}{2} } \\ \\ = \frac{(5^{2})^ \frac{3}{2}. 64 }{(4^{3})^ \frac{1}{3} . (5^{2})^ \frac{1}{2} } \\ \\ = \frac{5^{3} . 64}{4.5} \\ \\ = \frac{125 X64}{20} \\ \\ = 400[/tex]