Answer
$y=4\pm3i \sqrt2$
Work Step by Step
$(y-4)^2+18=0$
$(y-4)^2=-18$
$\sqrt(y-4)^2=\pm\sqrt-18$
$y-4=\pm 3i\sqrt2$
$y=4\pm3i \sqrt2$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 11 - Section 11.1 - Solving Quadratic Equations by Completing the Square - Exercise Set - Page 763: 26
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