Find the domain of each function and the equations of any vertical or horizontal asymptotes, noting any holes.
\The function
.

Cancel the common terms.
\
.
Find the domain of the function.
\The denominator value can not be zero, so find excluded values.
\To find excluded values equate the denominator value to
.
.

and
.
Domain of the function is
.
Find the vertical asymptote of the function.
\To find the vertical asymptote denominator of the function equate to zero.
\
.
is the vertical asymptote of the function.
Find the horizontal asymptote of the function.
\
.
is the horizontal asymptote.
Since the factor
in the denominator can be canceled out by the factor
in the numerator, the value of
is a hole.
Domain of the function is
.
is the vertical asymptote of the function.
is the horizontal asymptote.
The hole of the function is
.