Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - 5.3 - Multiplying Polynomials - Problem Set 5.3 - Page 207: 15



Work Step by Step

Using the Distributive Property and then combining similar terms, the given expression, $ (x-7)(x+1) , $ is equivalent to \begin{array}{l}\require{cancel} x(x)+x(1)-7(x)-7(1) \\\\= x^2+x-7x-7 \\\\= x^2-6x-7 .\end{array}
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