Take out the constants.
\[(50\times 37)mmnn\imath \imath \]
Simplify \(50\times 37\) to \(1850\).
\[1850mmnn\imath \imath \]
Use Product Rule: \({x}^{a}{x}^{b}={x}^{a+b}\).
\[1850{m}^{2}{n}^{2}{\imath }^{2}\]
Use Square Rule: \({i}^{2}=-1\).
\[1850{m}^{2}{n}^{2}\times -1\]
Simplify.
\[-1850{m}^{2}{n}^{2}\]
-1850*m^2*n^2
