Answer
$28x^2y+12xy^2$
Work Step by Step
$4xy(7x+3y)=\\4xy\cdot7x+4xy\cdot3y=\\28x^2y+12xy^2$
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 5 - Section 5.2 - Multiplication of Polynomials - Exercise Set - Page 337: 15
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