Answer
$$x=-6+\sqrt{39},\:x=-6-\sqrt{39}$$
Work Step by Step
Using the quadratic formula, we find:
$$x_{1,\:2}=\frac{-12\pm \sqrt{12^2-4\cdot \:1\left(-3\right)}}{2\cdot \:1}\\ x=-6+\sqrt{39},\:x=-6-\sqrt{39}$$
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 7 Exponential and Logarithmic Functions - 7.3 Use Functions Involving e - 7.3 Exercises - Mixed Review - Page 498: 66
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