Question

Write 3^n/9^n-1 as a power of 3

Answer 1

Answer:

3^(2-n)

Step-by-step explanation:

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

          =  $\frac{3^n}{3^(2n-2)}$

          =  $3^[n-(2n-2)]$

          =  $3^(2-n)$