Question 135280
Vertical asymptotes are vertical lines with equations of the form {{{x=a}}}.  There is a vertical asymptote for every value of x that makes the denominator of your rational function equal zero.  All you need to do is solve {{{x^2-4=0}}}.  Since this is a quadratic equation, you will have two roots, {{{a[1]}}} and {{{a[2]}}}, and therefore two vertical asymptotes, {{{x=a[1]}}} and {{{x=a[2]}}}.  It's up to you to figure out the values of {{{a[1]}}} and {{{a[2]}}}.