Question

Please give me answer

Answer 1

hope it helps you.....

Answer 2

$\bf HELLO \: \: DEAR,$


$\bf \frac{4 + \sqrt{5}}{4 - \sqrt{5}} = a + b\sqrt{5}$


$\underline{\bf \: now, \: \: L.H.S}$


$\bf \frac{4 + \sqrt{5}}{4 - \sqrt{5}} * \frac{4 + \sqrt{5}}{4 + \sqrt{5}}$

$\bf \frac{(4 + \sqrt{5})^{2}}{(4^{2} - \sqrt{5}^{2})}$


$\bf \frac{(16 + 5 + 8 \sqrt{5})}{(16 - 5)}$

$\bf \frac{21 + 8\sqrt{5}}{11}$


$\bf on \: \: comparing \: \: with \: \: R.H.S$


$\bf a = 21/11 , b = 8\sqrt{5}/11$


$\underline{\bf I \: \: HOPE \: \: ITS \: \: HELP \: \: YOU \: \: DEAR, \: \: THANKS}$