Answer
$2+i\sqrt{9}$
Work Step by Step
Using $i=\sqrt{-1}$ and the properties of radicals, the given expression, $
2+\sqrt{-9}
,$ is equivalent to
\begin{array}{l}\require{cancel}
2+\sqrt{-1}\cdot\sqrt{9}
\\\\=
2+i\sqrt{9}
.\end{array}
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.