Question

5-2√6/5+2√6.rastionalise the denominator​

Answer 1

Answer:

$5 - 2 \sqrt{6 } \div 5 + 2 \sqrt{6} \\ 5 \times 5 - 2 \sqrt{6} \div 5 \times 5 + 2 \sqrt{6} \div 5 \\ 25 - 2 \sqrt{6} + 2 \sqrt{6} \div 5 \\ 25 \div 5 \\ 5$

Answer 2

Answer:

$\frac{5 - 2 \sqrt{6}}{5 + 2 \sqrt{6} } \times \frac{5 - 2 \sqrt{6} }{5 - 2 \sqrt{6} }$

$= \frac{ {(5 - 2 \sqrt{6})}^{2} }{ {5}^{2} - (2 \sqrt{6})^{2} }$

$= \frac{25 + 24 - 20 \sqrt{6} }{25 - 24}$

$= 49 - 20 \sqrt{6}$

Hope it helps you.