Question

value of that question

Answer 1

$\frac{110 - \frac{450}{5} }{ \sqrt{(55 - \frac{225}{5} (220 - \frac{900}{5}) } }$
225/5 =45,900/5 =180, 450/5=90

So we have

$\frac{110 - 90}{ \sqrt{(55 - 45)(220 - 180)} }$
$\frac{20}{ \sqrt{10 \times 40} }$
$\frac{20}{ \sqrt{400} }$
$\frac{20}{20}$
=1