Intermediate Algebra for College Students (7th Edition)

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: 35

Answer

$2x^2y+15xy+15$

Work Step by Step

Consider the given polynomial $(5x^2y+9xy+12)+(-3x^2y+6xy+3)$ Need to drop the parentheses. Thus, $(5x^2y+9xy+12)+(-3x^2y+6xy+3)=5x^2y+9xy+12+-3x^2y+6xy+3$ or, $=5x^2y-3x^2y+9xy+6xy+12+3$ or, $=2x^2y+15xy+15$
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