Answer
$3x^2y+9xy$
Work Step by Step
Consider the given polynomial
$(-4x^2y+xy)+(7x^2y+8xy)$
Need to drop the parentheses.
Thus,
$(-4x^2y+xy)+(7x^2y+8xy)=-4x^2y+xy+7x^2y+8xy$
or, $=-4x^2y+7x^2y+xy+8xy$
or, $=3x^2y+9xy$
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 5.1 - Introduction to Polynomials and Polynomial Functions - Exercise Set - Page 325: 34
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