Question 25159
{{{((x-3) /( x^2 - x - 20))*((x^2 - 3X-10)/( x^2 - 9))}}}


The first step is to factor everything!!

{{{((x-3) /(( x- 5)*(x +4)))*(((x-5)*(X+2))/( (x-3)*(x+3)))}}}


Divide out the factors of (x-3) and (x-5), and what is left is this:

{{{((x+2))/((x+4)*(x+3))}}}


R^2 at SCC