Question

Please give correct answer of question 19

Answer 1

$\frac{1}{ \sqrt{6} + \sqrt{5} - \sqrt{11} } \\ \frac{1}{ \sqrt{6} + \sqrt{5} - \sqrt{11} } \times \frac{ \sqrt{6} + \sqrt{5} + \sqrt{11} }{ \sqrt{6} + \sqrt{5} + \sqrt{11} } \\ \frac{ \sqrt{6} + \sqrt{5} + \sqrt{11} }{( \sqrt{6} + \sqrt{5} ) {}^{2} - 11 } \\ \frac{ \sqrt{6} + \sqrt{5} + \sqrt{11} }{6 + 2 \sqrt{30} + 5 - 11 } \\ \frac{ \sqrt{6} + \sqrt{5} + \sqrt{11} }{2 \sqrt{30} } \\ \frac{( \sqrt{6} + \sqrt{5} + \sqrt{11}) \sqrt{30} }{2 \sqrt{30} \times \sqrt{30} } \\ \frac{6 \sqrt{5} + 5 \sqrt{6} + \sqrt{330} }{60}$
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