Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 11 - Section 11.5 - Imaginary Numbers - Exercise - Page 378: 35

Answer

$$ 3 \pm j .$$

Work Step by Step

For the equation $x^2 - 6x + 10 = 0$, we use the quadratic formula as follows $$ x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}, \quad a=1, \quad b=-6, \quad c=10 .$$ That is, $$ x=\frac{6 \pm \sqrt{36-40}}{2 }=\frac{6 \pm 2j}{2 }= 3 \pm j .$$
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