Question

pls help me in this question
I hv asked it 3rd time
pls pls pls​

Answer 1

Answer:

( 6√5 + 5√6 + √330 ) / 60

Step-by-step explanation:

Follow the hint...

$\displaystyle\frac1{\sqrt6+\sqrt5-\sqrt{11}}\\\\=\frac{\sqrt6+\sqrt5+\sqrt{11}}{(\sqrt6+\sqrt5-\sqrt{11})(\sqrt6+\sqrt5+\sqrt{11})}\\\\=\frac{\sqrt6+\sqrt5+\sqrt{11}}{(\sqrt6+\sqrt5)^2-(\sqrt{11})^2}\\\\=\frac{\sqrt6+\sqrt5+\sqrt{11}}{6+5+2\sqrt6\sqrt5 - 11}\\\\=\frac{\sqrt6+\sqrt5+\sqrt{11}}{2\sqrt{30}}\\\\=\frac{(\sqrt6+\sqrt5+\sqrt{11})\sqrt{30}}{2\sqrt{30}\sqrt{30}}\\\\=\frac{6\sqrt5+5\sqrt6+\sqrt{330}}{60}$

Answer 2

Hope this help.......