Write a rational factor and an irrational factor of each of the following surds (mixed surds).
i)
![10 \sqrt{3 \: } 10 \sqrt{3 \: }](https://tex.z-dn.net/?f=10+%5Csqrt%7B3+%5C%3A+%7D+)
ii)
![- \frac{7}{8} \sqrt[9]{21} - \frac{7}{8} \sqrt[9]{21}](https://tex.z-dn.net/?f=+-++%5Cfrac%7B7%7D%7B8%7D++%5Csqrt%5B9%5D%7B21%7D+)
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Answer:
i) 17
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