Algebra 2 (1st Edition)

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


$$r=.875\pm .75i$$

Work Step by Step

We try to get r alone in the equation. Thus, we obtain: $$-2.26 = (2r-1.75)^2 \\ 2r-1.75=\pm 1.5i \\ r=.875\pm .75i$$
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