In both cases there are infinite vertical asymptotes, not only one vertical asymptote...
Kind regards
1. If a function is the quotient of functions (as it is in your case) you'll find a vertical asymptote if the denominator function equals zero and the numerator function is not zero.
2. Re-write the first function:
... and now apply the hint from #1 to find at least one of the unlimited number of vertical asymptotes.
3. Do the same with the 2nd question but be aware that the hint at #1 doesn't work if x approaches zero.