Answer
a) Yes, $x=-8$
b) Yes, $x=-4, -1$
c) No
Work Step by Step
The equation is undefined when the denominator of the expression is equal to 0:
a) $x+8 = 0$
$x = -8$
b) $x^2+5x+4 = 0$
$(x+1)(x+4) = 0$
$x = -1, -4$
c) $5 \ne 0$.
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 - Practice - Page 484: 2
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