Answer
$29^{2}=841$
Work Step by Step
$29^{2}=(30-1)^{2}$
Using $(a-b)^{2}=a^{2}+b^{2}-2ab$ where $a=30$ and $b=1$, we have
$(30-1)^{2}=30^{2}+1^{2}-2(30)(1)$
$=900+1-60$
$=841$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 7 - Polynomial Equations and Factoring - 7.3 - Special Products of Polynomials - Exercises - Page 375: 28
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