Answer
$r=-2/3$
or
$r=-5$
Work Step by Step
$6r^2+20=-34r$
$6r^2+34r+20$
$20*6=120$
$30*4=120, 30+4=34$
$6r^2+30r+4r+20$
$6r(r+5)+4(r+5)$
$(6r+4)(r+5)$
$6r+4=0$
$6r=-4$
$r=-4/6$ simplifies to $r=-2/3$
Alternatively
$r+5=0$
$r=-5$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 11 - Rational Expressions and Functions - Get Ready - Page 649: 14
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