3 4х-6 2х х 3(х+1)+4х-6+2х(х-4) х
--------+-----------------+---------•------= ------------------------------• -----------=
х-4 х^2-3х-4 х+1 2х-3 (х-4)(х+1) 2х-3
2х^2-х-3 х (2х-3)(х+1) х х(х+1)
--------------•--------- = --------------------•---------=- ----------------------
(х-4)(х+1) 2х-3 (х-4)(х+1) 2х-3 (х-4)(х+1