College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 5 - Section 5.1 - Polynomial Functions and Models - 5.1 Assess Your Understanding - Page 342: 136



Work Step by Step

The quadratic formula is: $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$. Hence the solutions are: $x=\frac{-8\pm\sqrt{8^2-4\cdot4(-3)}}{2\cdot4}=\frac{-8\pm\sqrt{64+48}}{8}=\frac{-4\pm\sqrt{28}}{4}=\frac{-2\pm\sqrt{7}}{2}$.
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