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 - 8-7 Factoring Special Cases - Practice and Problem-Solving Exercises - Page 526: 11



Work Step by Step

$d^{2}-20d+100=$ ...write the last term as a square. $=d^{2}-20d+10^{2}$ ...does middle term equal $2ab$? $20d=2(d)(10)$ $=d^{2}-2(d)(10)+10^{2}$ ...write as the square of a binomial. $=(d-10)^{2}$
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