To solve this problem you must apply the proccedure shown below: 1- You have the following quadratic expression <span>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: </span><span>n^2+5n-5n-25 </span><span>n^2+25 Therefore, as you can see, the answer is the second option, which is: (n-5)(n+5)</span>