Answer
Expression is undefined when
x=6 or x=-1
Work Step by Step
Expression is undefined when
$x^{2}$-5x-6=0
$x^{2}$+x-6x-6=0
x(x+1)-6(x+1)=0
(x-6)(x+1)=0
x-6=0 or x+1=0
x=6 or x=-1
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 7 - Section 7.1 - Simplifying Rational Expressions - Exercise Set - Page 490: 19
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