Answer
$z^2-121$.
Work Step by Step
The given expression is
$=(z+11)(z-11)$
Use sum and difference pattern $(a+b)(a-b)=a^2-b^2$.
We have $a=z$ and $b=11$.
$=z^2-11^2$
Simplify.
$=z^2-121$
Hence, the product is $z^2-121$.
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 - Chapter Test - Page 413: 6
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