no 4 ma 5 sama caranya

[tex] {5}^{ - 3} + {10}^{ -2 } \\ = \frac{1}{ {5}^{3} } + \frac{1}{ {10}^{2} } \\ = \frac{1}{125} + \frac{1}{100} \\ = \frac{100}{12500} + \frac{125}{12500} \\ = \frac{225}{12500} \\ = \frac{9}{500} \\ \\ 3 \sqrt{125} + 2 \sqrt{45} \\ = 6 \sqrt{5625} \\ = 6 \times 75 \\ = 450[/tex]