Question

Simplificati fractia: 3^n+2 * 5^n+1 supra 15^n+1

Answer 1

$\frac{3^{n+2}\cdot5^{n+1}}{15^{n+1}}=$
$=\frac{3^{n+1}\cdot3\cdot5^{n+1}}{15^{n+1}}=$
$=\frac{15^{n+1}\cdot3}{15^{n+1}}=$
$=\frac{3}{1}=3$