Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Appendix A - Review - A.3 Polynomials - A.3 Assess Your Understanding - Page A30: 49



Work Step by Step

The standard form of a polynomial is $a_{n}x^{n}+a_{n}x^{n-1}+\cdots+a_{1}x+a_{0}$ (written in order, highest degree first. If a term is missing, it means that the coefficient is 0) --- Recognize a difference of squares $(A-B)(A+B)=A^{2}-B^{2}$. $(x-7)(x+7)=x^{2}-7^{2}$ = $x^{2}-49$ (Or, apply the FOIL method)
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