$$\left( {\frac{{1 + \sqrt 2 }}{{\sqrt 5+ \sqrt 3 }} + \frac{{1 - \sqrt 2 }}{{\sqrt 5- \sqrt 3 }}} \right)$$simplifies to = ?

${\text{2}}\sqrt 5- 3\sqrt 6 $$

$$\left( {\frac{{1 + \sqrt 2 }}{{\sqrt 5+ \sqrt 3 }} + \frac{{1 - \sqr

1.	$$\left( {\frac{{1 + \sqrt 2 }}{{\sqrt 5+ \sqrt 3 }} + \frac{{1 - \sqrt 2 }}{{\sqrt 5- \sqrt 3 }}} \right)$$simplifies to = ?
A.	$\sqrt 5+ \sqrt 6 $$
B.	${\text{2}}\sqrt 5+ \sqrt 6 $$
C.	$\sqrt 5- \sqrt 6 $$
D.	${\text{2}}\sqrt 5- 3\sqrt 6 $$
Answer» D. ${\text{2}}\sqrt 5- 3\sqrt 6 $$