Answer
add
$3^{9}$
Work Step by Step
When we multiply two powers with same base , we add the exponents.
So, $3^{4}\times3^{5}$ = $3^{4+5}$ = $3^{9}$
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.3 - Integer Exponents and Scientific Notation - P.3 Exercises - Page 23: 4
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