[tex]( \frac{4{j}^{3} k}{ {l}^{2} } )^{2} \: \: to \: \: \frac{16{j}^{6} {k}^{2} }{ {l}^{4} }[/tex]
[tex](\frac{4j^{3}k}{l^{2}})^{2} = \frac{4^{2}\cdot (j^{3})^{2}\cdot k^{2}}{(l^{2})^{2}} = \boxed{\frac{16j^{6}k^{2}}{l^{4}}}[/tex]
