Answer
$25x^{8}-30x^{4}+9$
Work Step by Step
$(5x^{4}-3)^{2}$
Apply the formula for squaring a binomial, which is $(a-b)^{2}=a^{2}-2ab+b^{2}$
Here, $a=5x$ and $b=3$:
$(5x^{4}-3)^{2}=(5x^{4})^{2}-2(5x^{4})(3)+3^{2}=25x^{8}-30x^{4}+9$
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 387: 37
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