Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - Chapter Test - Page 156: 10


$+\sqrt 2, -\sqrt2, +\sqrt 3i, -\sqrt3i$

Work Step by Step

$x^4+x^2-6=0$ $(x^2+3)(x^2-2)=0$ Either $x^2+3=0$ giving $x = +\sqrt 3i, -\sqrt3i$ or $x^2-2=0$ giving $x = +\sqrt 2, -\sqrt2$
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