Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 8 - Review - Page 531: 40

Answer

$(2,7/2)$

Work Step by Step

$3/ (x-2) > 2$ $x-2=0$ $x-2+2=0+2$ $x=2$ The denominator is zero when $x=2$. $3/(x-2) =2$ $3*(x-2)/(x-2) = 2*(x-2)$ $3 = 2(x-2)$ $3/2 = 2(x-2)/2$ $3/2 =x-2$ $3/2+2 =x-2+2$ $7/2 =x$ Three regions to test: $(-∞, 2)$, $(2,7/2)$, $(7/2,∞)$ Let $x=0$, $x=3$, $x=4$ $x=0$ $3/ (x-2) > 2$ $3/ (0-2) > 2$ $3/-2 >2$ $-3/2 > 2$ (false) $x=3$ $3/ (x-2) > 2$ $3/ (3-2) > 2$ $3/1 >2$ $3 >2 $ (true) $x=4$ $3/ (x-2) > 2$ $3/ (4-2) > 2$ $3/2 > 2$ (false)
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