Answer
$\sqrt {\frac{1}{4}(1+15)} = 2$
Work Step by Step
$\sqrt {\frac{1}{4}(1+15)} = \sqrt {\frac{1}{4}\times16} = \sqrt {4} = \sqrt {2^2} = 2$
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.