Answer
$x=-3; x=-4$
Work Step by Step
$x=\frac{-b+\sqrt (b^{2}-4ac)}{2a}$
$x=\frac{-b-\sqrt (b^{2}-4ac)}{2a}$
a= 1
b= 7
c= 12
$x=\frac{-7+1}{2}$
$x=\frac{-7-1}{2}$
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Appendix A - A.4 - Quadratic Equations - Exercises - Page 560: 20
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