[tex] {( {2}^{3n + 2}{ \div {2}^{3n} }) }^{2} + \frac{ {3}^{2n + 1} \times {8}^{n} }{ {9}^{n} \times {2}^{3n} } = {( {2}^{2}) }^{2} + \frac{ {3}^{2n + 1} \times {2}^{n} }{ {3}^{2n \times} \times {2}^{3n} } = {2}^{4} + 3 = 19[/tex]
