Answer
L’Hôpital’s Rule does not apply.
Work Step by Step
Since we have
$$
\lim _{x \rightarrow 9} \frac{x^{1/2}+x-6}{x^{3/2}-27}=\frac{3+9-6}{27-27}=\frac{6}{0}=\infty
$$
then L’Hôpital’s Rule does not apply.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.