\( \begin{array}{lll}\text { 11. } 2 \sqrt[3]{16 x^{2} y^{7}} & \text { 17. } 2 x y \sqrt[3]{128 x^{2} y^{8}} & \text { 23. } \sqrt{8 x^{2} y^{4}+16 x y^{4}} \\ \text { 12. } \frac{2}{3} \sqrt[3]{27 m^{2} n^{8}} & \text { 18. } \frac{1}{3 a} \sqrt{27 a^{3} m^{7}} & \text { 24. } \sqrt{2 x^{2}-4 x y+2 y^{2}} \\ \text { 13. } 5 a \sqrt[3]{160 x^{7} y^{9} z^{13}} & \text { 19. } \frac{3}{5 x} \sqrt[3]{375 a^{8} b} & \text { 25. } \sqrt{(a-b)\left(a^{2}-b^{2}\right)} \\ \begin{array}{lll}\text { 14. } \sqrt[4]{80 a^{4} b^{5} c^{12}} & \text { 20. } \frac{1}{3} \sqrt[4]{81 a^{4} b} & \text { 26. } \sqrt{2 a m^{2}+4 a m n+2 a n^{2}} \\ \text { 15. } 3 \sqrt[4]{5 x^{8} y^{14} z^{16}} & \text { 21. } \sqrt{9 a+18 b} & \text { 27. } \sqrt{9 a^{3}-36 a^{2}+36 a} \\ \text { 16. } \frac{25}{5} \sqrt[32 x^{2} y^{11}]{ } & \text { 22. } \sqrt{3 a^{3} b^{2}-3 a^{2} b^{2}} & \end{array}\end{array} \)
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Did you know that the study of roots and radicals dates back to ancient civilizations? The Babylonians were already using methods involving square roots and cube roots around 2000 BC, and they had accurate approximations for these calculations! Fast forward to today, understanding radical expressions is crucial not only in mathematics but also in physics, engineering, and computer science where precise calculations can lead to innovative solutions. When simplifying radical expressions, common pitfalls include forgetting to simplify completely or mismanaging negative signs. Always check your final expression to see if there are any further factoring opportunities, and remember that terms under a radical can often be rewritten to make simplification easier. Keep practicing, and soon, you'll conquer radical expressions like a pro!