`(3^nxx9^(n+1))/(3^(n-1)xx9^(n-1))`

Simplify the following: (3^(n)x9^(n+1))/(3^(n-1)x9^(n-1)) (ii) (5x25^(n+1)-25x5^(2n))/(5x5^(2n+3)-(25)^(n+1))

Simplify the following: (i)\ (3^n\ xx\ 9^(n+1))/(3^(n-1)\ xx\ 9^(n-1)) ,

Find the value of (3^(n)xx3^(2n+1))/(9^(n)xx3^(n-1)) .

Simplify: (3^(n+1))/(3^(n(n-1)))-:(9^(n+1))/((3^(n+1))^((n-1)))

Simplify :(3xx27^(n+1)+9xx3^(3n-1))/(8xx3^(3n)-5xx27^(n))