Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 11 - Cumulative Review - Page 836: 37

Answer

$x=3±\frac{i\sqrt{5}}{2} $

Work Step by Step

$4x^2-24x+41=0$ $(4x^2-24x+41)/4=0/4$ $x^2-6x+41/4=0$ $x^2-6x+41/4+(-6/2)^2=0+(-6/2)^2$ $x^2-6x+41/4+(-3)^2=0+(-3)^2$ $x^2-6x+41/4+9=9$ $x^2-6x+41/4+9-41/4=9-41/4$ $x^2-6x+9=-5/4$ $(x-3)^2=-5/4$ $\sqrt{(x-3)^2}=\sqrt{-5/4}$ $(x-3)=\sqrt{-5/4}$ $(x-3)=\sqrt{-5}/2$ $x-3+3=\sqrt{-5}/2 +3$ $x=3±\sqrt{-5}/2 $ $x=3±\frac{i\sqrt{5}}{2} $
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