The function is
.
Factorize the numerator and denominator of the function.
\

Cancel the common terms.
\
.
Vertical asymptote is a vertical line which corresponds to zeros of denominator.
\Find the vertical asymptote by equate the denominator to zero and solve for
.
.
Apply zero product property.
\
and
and
.
, there is no real solutions.
The vertical asymptote is
.
The vertical asymptote is
.