9. Simplify: 4/81 - 8 1343 +15 332 + 225
![\sqrt[4]{81} - 8 \sqrt[3]{343} + 15 \sqrt[5]{32} + \sqrt{225}](https://tex.z-dn.net/?f=+%5Csqrt%5B4%5D%7B81%7D++-+8+%5Csqrt%5B3%5D%7B343%7D++%2B+15+%5Csqrt%5B5%5D%7B32%7D++%2B++%5Csqrt%7B225%7D+ "\sqrt[4]{81} - 8 \sqrt[3]{343} + 15 \sqrt[5]{32} + \sqrt{225}")
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