Answer
$-2\sqrt{3}$
Work Step by Step
Using the properties of radicals, then,
\begin{array}{l}
\sqrt{27}-\sqrt{75}
\\=
\sqrt{9\cdot3}-\sqrt{25\cdot3}
\\=
3\sqrt{3}-5\sqrt{3}
\\=
-2\sqrt{3}
.\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.