Algebra and Trigonometry 10th Edition

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

Chapter 4 - Review Exercises - Page 352: 4


Domain: all real numbers except $x=2$

Work Step by Step

$\frac{x^2+x-2}{x^2-4x+4}$ The denominator must be different from $0$. $x^2-4x+4\ne0$ $x^2-2(2)x+2^2\ne0$ $(x-2)^2\ne0$ $(x-2)\ne0$ $x\ne2$
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