Answer
$\displaystyle \frac{x^{2}+3}{\sqrt{x^{2}+1}}$
Work Step by Step
$(x^{2}+1)^{1/2}+2(x^{2}+1)^{-1/2}=(x^{2}+1)^{-1/2}[(x^{2}+1)+2]=\displaystyle \frac{x^{2}+3}{\sqrt{x^{2}+1}}$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Section P.6 - Factoring - P.6 Exercises - Page 42: 57
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