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: 3

Answer

$ a^2-25$

Work Step by Step

RECALL: $(a+b)(a-b)=a^2-b^2$ Use the formula above to have: $(a+5)(a-5) \\= a^2 - 5^2 \\ = a^2-25$
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