Answer
multiplying by 1
Work Step by Step
Since both the numerator and the denominator of the radicand are multiplied by the same number, the given equality is justified by $\text{
multiplying by 1
.}$
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.