Answer
See proof below.
Work Step by Step
1. List all possible rational zeros $\pm1$
2. Test the above values $P(1)=1-5+1-1\ne0,P(-1)=1+5+1-1\ne0$
3. We conclude that there are no rational zeros.
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 3 - Section 3.4 - Real Zeros of Polynomials - 3.4 Exercises - Page 285: 90
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