Use Product Rule: \({x}^{a}{x}^{b}={x}^{a+b}\).
\[INw{h}^{2}a{t}^{2}{\imath }^{2}{s}^{2}\]
Use Square Rule: \({i}^{2}=-1\).
\[INw{h}^{2}a{t}^{2}\times -1\times {s}^{2}\]
Simplify.
\[INw{h}^{2}a{t}^{2}\times -{s}^{2}\]
Regroup terms.
\[-INw{h}^{2}a{t}^{2}{s}^{2}\]
-INw*h^2*a*t^2*s^2
