Question

please answer me!! It's very very urgent​

Answer 1

Answer:

a=0; b=4/59

Step-by-step explanation:

$\frac{8+\sqrt{5} }{8-\sqrt{5}} - \frac{8-\sqrt{5} }{8+\sqrt{5}}$

= $\frac{(8+\sqrt{5} )^2-(8-\sqrt{5} )^2}{8^2-\sqrt{5}^2 }$

= $\frac{4(8)(\sqrt{5} )}{64-5}$

= $\frac{4(8)(\sqrt{5} )}{59}$

= $0 + \frac{4}{59}*8\sqrt{5}$ (which is of the form a+$8\sqrt{5} b$ )

=> a=0; b=4/59