Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 8 - Section 8.1 - Solving Quadratic Equations by Completing the Square - Exercise Set - Page 482: 15

Answer

x=±3i

Work Step by Step

Original Equation x²+9=0 Subtract 9 from both sides x²=-9 Take the square root of both sides x=±$\sqrt -9$ Simplify the radical x=±3i
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