Answer
$x=-4$ or $x=1$
Work Step by Step
Subtract $4$ from each side:
$x^2+3x-4=0$
Factor the trinomial to obtain:
$x^2+3x-4=0\\
(x+4)(x-1)=0$
Use the Zero-Product Property to obtain:
$x+4=0$ or $x-1=0$
Hence,
$x=-4$ or $x=1$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 5 - Exponential and Logarithmic Functions - 5.3 Exponential Functions - 5.3 Assess Your Understanding - Page 280: 2
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