Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 8 - Polynomials and Factoring - Mid-Chapter Quiz - Page 510: 23



Work Step by Step

$(7h-2)(7h+2)=$ ...identify which terms correspond to $a $ and $b $ the rule for the product of a sum and difference ($(a+b)(a-b)=a^{2}-b^{2}$). $a=7h,\ b=2$ ...substitute for $a $and $b $in the rule $(7h-2)(7h+2)=(7h)^{2}-2^{2}$ ...simplify. =$49h^{2}-4$
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