Answer
$y^{7}$
Work Step by Step
Using $a^m\cdot a^n=a^{m+n},$ the given expression, $
y\cdot y^2\cdot y^4
,$ simplifies to
\begin{array}{l}\require{cancel}
y^{1+2+4}
\\\\=
y^{7}
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Cumulative Review - Page 472: 21c
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