# 404

The requested page was not found, but try solving this simple math problem (no calculator).

$\begin{array}{c} {x^2} + {y^2} = 800\\ xy = 198\\ {\left( {x – y} \right)^2} = \: ? \end{array}$

$\begin{array}{*{20}{c}} {\left( a \right)}&{104}&{}\\ {\left( b \right)}&{204}&{}\\ {\left( c \right)}&{304}&{}\\ {\left( d \right)}&{404}&{\left( {{\rm{correct \: answer}}} \right)}\\ {\left( e \right)}&{504}&{} \end{array}$