Answer
$49$
Work Step by Step
$p=7x,\qquad q=7y,\qquad $x and y have no common factors.
$p^{2}=7^{2}x^{2}\qquad q^{2}=7^{2}y^{2}$
x and y have no common factors.
So their GCF is $7^{2}=49$.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 8 - Polynomials and Factoring - 8-2 Multiplying and Factoring - Practice and Problem-Solving Exercises - Page 496: 41
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