Question

hey friends solve this

Answer 1

here is your answer bro....

Answer 2

$\frac{4 + \sqrt{5} }{4 - \sqrt{5} } = \frac{4 + \sqrt{5} }{4 - \sqrt{5} } \times \frac{4 + \sqrt{5} }{4 + \sqrt{5} }$

$\frac{ {(4 + \sqrt{5)} }^{2} }{ {4}^{2} - { \sqrt{5} }^{2} }$
$= \frac{{4}^{2} + 2 \times 4 \times \sqrt{5} + { \sqrt{5} }^{2} }{16 - 5} \\ = \frac{16 + 8 \sqrt{5} + 5}{11}$
$= \frac{21 + 8 \sqrt{5} }{11}$
$= \frac{21}{11} + \frac{8 \sqrt{5} }{11}$
so a=21/11 and B=8/11