Question 967633
What is the question?  You only showed an expression.


5x+25/x^2-25


Are you looking for this:  (5x+25)/(x^2-25) ?

 {{{(5x+25)/(x^2-25)}}}


{{{(5(x+5))/((x+5)(x-5))}}}


{{{(5cross((x+5)))/(cross((x+5))(x-5))}}}


{{{5/(x-5)}}} with the restriction {{{x<>-5}}}.