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 - 8-4 Multiplying Soecial Cases - Practice and Problem-Solving Exercises - Page 508: 33



Work Step by Step

Rewrite the product 63$\times$57 into (60+3)(60-3). Apply the formula (a+b)(a-b)=$a^{2}$-$b^{2}$, we have: (60+3)(60-3) = $60^{2}$-$3^{2}$ =3600-9 =3591
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