Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 10 - Section 10.4 - Special Products - Exercise: 38

Answer

$16-8x^2+x^4$

Work Step by Step

RECALL: $(a-b)^2=a^2-2ab+b^2$ Use the formula above to have: $(4-x^2)^2 \\=4^2-2(4)(x^2)+(x^2)^2 \\=16-8x^2+x^4$
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