College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 3, Polynomial and Rational Functions - Chapter 3 Review - Concept Check - Page 355: 8

Answer

See the explanation

Work Step by Step

Step 1 List Possible Zeros: list all possible rational zeros, using the rational zeros theorem. The Rational Zero Theorem states that, if the polynomial $f(x)=a_{n}x^{n}+a_{nāˆ’1}x^{nāˆ’1}+...+a_{1}x+a_{0}$ has integer coefficients, then every rational zero of $f(x)$ has the form $p/q$ where $p$ is a factor of the constant term $a_{0}$ and $q$ is a factor of the leading coefficient $a_{n}$. When the leading coefficient is $1$, the possible rational zeros are the factors of the constant term. Step 2 Divide: use synthetic division to evaluate the polynomial at each of the candidates for the rational zeros that you found in Step 1. When the remainder is $0$, note the quotient you have obtained. Step 3 Repeat Step 1 and Step 2 for the quotient. Stop when you reach a quotient that is quadratic or factors easily, and use the quadratic formula or factor to find the remaining zeros.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.