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 5.2 - Multiplication of Polynomials - Exercise Set - Page 338: 54

Answer

$5x^{2n}+19x^ny^n-4y^{2n}$

Work Step by Step

I use the FOIL method: $(5x^n-y^n)(x^n+4y^n)=5x^{2n}+20x^ny^n-x^ny^n-4y^{2n}=5x^{2n}+19x^ny^n-4y^{2n}$
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