I need help with these two problems:

1. Find the Derivative of f(x)=((2*x)/(x=1))^2

2. Find the points on the graph of the function f(x) = (x+1)/(x-1) where the tangent line(s) to the graph are parallel to the line x+2y = 6.

Can someone walk me through the second one more carefully? I can't find an example of something like it in my notebook. Thanks for any help in advance.