Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - 4.6 Special Products - 4.6 Exercise Set - Page 276: 37



Work Step by Step

Using $(a+b)(c+d)=ac+ad+bc+bd$ or the product of $2$ binomials, the given expression, $ (x^2+3)(x^3-1) $, is equivalent to \begin{array}{l}\require{cancel} x^2(x^3)+x^2(-1)+3(x^3)+3(-1) \\\\= x^5-x^2+3x^3-3 \\\\= x^5+3x^3-x^2-3 .\end{array}
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