Answer
$80x^{12}y^{10}$
Work Step by Step
RECALL:
The product rule of exponents states that: $a^m \cdot a^n=a^{m+n}$.
Multiply the numerical coefficients, and use the rule above to find:
$\\=80x^{5+7}y^{6+4}
\\=80x^{12}y^{10}$
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 1 - Section 1.6 - Properties of Integral Exponents - Exercise Set - Page 79: 12
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