What is the factor form of n^-25 (n—25)(n-1) (n-5)(n+5) (n+5)(n+5) (n-25)(n+1)

To solve this problem you must apply the proccedure shown below:
 1- You have the following quadratic expression n^2-25. 
 2. When you factor, you obtain:
 (n-5)(n+5)
 3. To verify this is true, you can apply the distributive property, as below:
 n^2+5n-5n-25
 n^2+25
 Therefore, as you can see, the answer is the second option, which is:
 (n-5)(n+5)