College Algebra (10th Edition)

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

Chapter 1 - Section 1.3 - Complex Numbers; Quadratic Equations in the Complex Number System - 1.3 Assess Your Understanding: 58

Answer

$x=\pm 5i$

Work Step by Step

We solve by isolating x: $x^{2}+25=0$ $x^{2}=-25$ $x=\pm\sqrt{-25}=\pm 5i$
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