Answer
$(x^2+7)(x^2+3)$
Work Step by Step
$(x^\square +7)(x^\square +3)=x^4+10x^2+21$
$(x^\square +7)(x^\square +3)$
$=x^{\square^2}+10x^\square +21$
$=x^4+10x^2+21$
$\square=2$
$(x^2+7)(x^2+3)$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Section 5.6 - Special Products - Exercise Set - Page 389: 93
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