Answer
$x^{4}-100$
Work Step by Step
$(x^{2}+10)(x^{2}-10)=$
$x^{2}(x^{2}-10)+10(x^{2}-10)=$
$x^{4}-10x^{2}+10x^{2}+(10)(-10)=$
$x^{4}-100$
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 388: 73
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