Answer
$y(y^2-100)$
Work Step by Step
$y(y-10)=y(y-10)$, $y^2-100=(y+10)(y-10)$, so the GCF is $y-10$ and the terms that are "not common" are $y$ and $y+10$ so LCD$=(y-10)y(y+10)=y(y^2-100)$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 6 - Section 6.2 - Adding and Subtracting Rational Expressions - Exercise Set - Page 427: 21
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