Answer
$$r=.875\pm .75i$$
Work Step by Step
We try to get r alone in the equation. Thus, we obtain:
$$-2.26 = (2r-1.75)^2 \\ 2r-1.75=\pm 1.5i \\ r=.875\pm .75i$$
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 - 4.8 Use the Quadratic Formula and the Discriminant - 4.8 Exercises - Skill Practice - Page 296: 47
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