Answer
a.
$y^{7}$
b.
$64x^{2}$
c.
$x$
Work Step by Step
a.
$y^{5}y^{2} = y^{5+2} = y^{7}$
b.
$(8x)^{2} = 8x\times8x=64x^{2}$
c.
$x^{4}x^{-3} = x^{4-3} =x^{1} = x$
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: 20
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