9th class 1.4
![\sqrt[4]{?81 }](https://tex.z-dn.net/?f=+%5Csqrt%5B4%5D%7B%3F81+%7D+ "\sqrt[4]{?81 }")
![\sqrt[4]{?81} - 8 \sqrt[3]{343?} + 15 \sqrt[5]{?32} + \sqrt{225}](https://tex.z-dn.net/?f=++%5Csqrt%5B4%5D%7B%3F81%7D++-+8+%5Csqrt%5B3%5D%7B343%3F%7D++%2B+15+%5Csqrt%5B5%5D%7B%3F32%7D++%2B++%5Csqrt%7B225%7D+ "\sqrt[4]{?81} - 8 \sqrt[3]{343?} + 15 \sqrt[5]{?32} + \sqrt{225}")
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