Question

$3^{2n+1}-9^{n}/3^{2n}$

Answer 1

$\frac{ 3^{2n+1}-9^{n} }{3^{2n}}\\\\ \frac{3^{2n+1}}{3^{2n}} - \frac{9^n}{3^{2n}} \\\\\frac{3^{2n+1}}{3^{2n}} - \frac{9^}{3^{2}} \\\\\\3- \frac{9}{9} \\\\3-1=2$