EDIT: One more problem I'm having with fuctions...
solve:
f(2/3) = (x^2+3)/(x-5)
having a hard time here
I'll do the second rational equation ... you try the first one after I show you how ...
cross multiply ...
expand (multiply out) both sides ...
combine like terms ...
here's the first one ... I'll leave the easier one for you.
square both sides ...
combine like terms ...
important! ... check the solution
checks good.