Question

$( \sqrt{3} + \sqrt{5} ) {}^{2}$

Answer 1

using identity (a+b)²=a²+b²+2ab
$(\sqrt{3} + \sqrt{5} ) { }^{2} \\ \sqrt{3 {}^{2} } + \sqrt{5 {}^{2} } + 2 \times \sqrt{5} \times \sqrt{3} \\ 3 + 5 + 2 \sqrt{15} \\ 8 + 2 \sqrt{5 }$
hope it helps

Answer 2

($( \sqrt{3}+ \sqrt{5}) ^{2}$

it is solve by formula 
(a+b)² =a²+b²+2ab
so
($( \sqrt{3}+ \sqrt{5}) ^{2}$=$\sqrt{3}^2+ \sqrt{5}^2+2* \sqrt{3}* \sqrt{5}$




I HOPE THIS WILL HELP U
BY DEVANSH