Answer
$$x=3\sqrt{2}-2,\:x=-3\sqrt{2}-2$$
Work Step by Step
Completing the square, we find:
$$x^2+4x-14+2^2-2^2 \\ \left(x+2\right)^2-14-2^2 \\ \left(x+2\right)^2-18 \\ x=3\sqrt{2}-2,\:x=-3\sqrt{2}-2$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - Chapter Test - Page 323: 19
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