Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.4 - Quadratic Equations and Applications - 1.4 Exercises - Page 110: 29

Answer

{$\frac{1-3\sqrt 2}{2}, \frac{1+3\sqrt 2}{2}$}

Work Step by Step

$(2x-1)^2=18$ $2x-1 = +\sqrt {18} or -\sqrt {18} = +3\sqrt {2} or -3\sqrt {2}$ $2x = 1+3\sqrt {2} or 1-3\sqrt {2}$ x = {$\frac{1-3\sqrt 2}{2}, \frac{1+3\sqrt 2}{2}$}
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