how to find cube root of -27÷343
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27=3×3×3
343=7×7×7
![\sqrt[3]{ - \frac{27}{343} } \\ = \sqrt[3]{ \frac{ - 3 \times - 3 \times - 3}{7 \times 7 \times 7} } \\ = - \frac{3}{7}](https://tex.z-dn.net/?f=+%5Csqrt%5B3%5D%7B+-++%5Cfrac%7B27%7D%7B343%7D+%7D++%5C%5C++%3D++%5Csqrt%5B3%5D%7B++%5Cfrac%7B+-+3+%5Ctimes++-+3+%5Ctimes++-+3%7D%7B7+%5Ctimes+7+%5Ctimes+7%7D+%7D++%5C%5C++%3D++-++%5Cfrac%7B3%7D%7B7%7D+ "\sqrt[3]{ - \frac{27}{343} } \\ = \sqrt[3]{ \frac{ - 3 \times - 3 \times - 3}{7 \times 7 \times 7} } \\ = - \frac{3}{7}")
343=7×7×7
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