Question

please solve this answer and explain​

Answer 1

Step-by-step explanation:

3^2n+4-5*3^^2n+2/(3^2)^n-1*3^2*2

=3^2n+4-5*3^2n+2/3^2n-2+2*2

=3^2n(3^4-5*3^2)/3^2n*2

=81-45/2=36/2=18