Question

this is iit series question

Answer 1

this is
$(\sqrt{a \: } - \sqrt{b} - \sqrt{c} ) ^{2}$

Answer 2

${ (\sqrt{a} + \sqrt{b} - \sqrt{c} )}^{2}$
or
${( - \sqrt{a} - \sqrt{b} + \sqrt{c}) }^{2}$