use any method to find the range of the function f, where

1. f(x) = 1/(x-2)(x-6)

2. f(x) = x/(1-x)^2

i really dont know where to start here. i could graph these functions, but i just don't manage to break them down to recognisable patterns. otherwise i thought i could find the domain of the inverse and then use that as the range, but that doesnt work does it? anyway i would be needing some help...