## Algebra 1

Published by Prentice Hall

# Chapter 8 - Polynomials and Factoring - 8-4 Multiplying Special Cases - Practice and Problem-Solving Exercises - Page 496: 31

1596

#### Work Step by Step

Rewrite each factor as a binomial with terms that are easy to multiply using mental math. Use the product of a sum and a difference rule. $42\times38=(40+2)(40-2)=1600-4=1596$

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