Answer
$8^{10}$
Work Step by Step
According to the product rule for exponents, $a^{m}\times a^{n}=a^{m+n}$.
Therefore, $8^{9}\times 8=8^{9}\times 8^{1}=8^{9+1}=8^{10}$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter 4 - Section 4.1 - Integer Exponents and Scientific Notation - 4.1 Exercises - Page 276: 11
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