404

The requested page was not found, but try solving this simple math problem.

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

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