Answer
$(y^n+3)(x^n+1)$
Work Step by Step
$x^ny^n+3x^n+y^n+3=\\=x^n(y^n+3)+1(y^n+3)\\=(y^n+3)(x^n+1)$
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 5.3 - Greatest Common Factors and Factoring by Grouping - Exercise Set - Page 347: 67
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