Question 57652
Hi dnn,
Is this the same problem you had earlier?  You did a much better job of showing where your fractions began and ended this time.  Icouldn't answer your last question.
{{{((x^2+2x-15)/(x^2-9))/((x^2+6x+5)/(x^2+4x+3))}}}  First factor everything.
{{{((x+5)(x-3)/((x+3)(x-3)))/((x+5)(x+1)/((x+3)(x+1)))}}}  Cancel the numerators and denominators that match in the top fraction and the bottom fraction.
{{{((x+5)*cross((x-3))/((x+3)*cross((x-3))))/((x+5)*cross((x+1))/((x+3)*cross((x+1))))}}}
{{{((x+5)/(x+3))/((x+5)/(x+3))}}}  Do you see that the top fraction matches the bottom fraction exaclty?  Anything divided by itself is 1
{{{cross(((x+5)/(x+3)))/cross(((x+5)/(x+3)))}}}
{{{highlight(1)}}}
I think it's so cool when something that big and complicated looking reduces down to a single term!
Happy Calculating, dnn!!!