Find the difference. express your answer in simplest form. (5s/s^2-10s+25) - (25/s^2-10s+25)

To solve this problem  you must apply the proccedure shown below:

 1. You have the following expression:

 (5s/s^2-10s+25) - (25/s^2-10s+25)

 2. As you can see, they have the same denominator, therefore, you can rewrite it as below:

 (5s-25)/ (25/s^2-10s+25)

 3. When you factor ir, you obtain:

 5(s-25)/(s-5)(s-5)

 3. Simplifying:

 5/(s-5)