Answer
$C=$ either $-7$ or $3$
Work Step by Step
$2x^2+5x+C,$
$a+b=5, ab=2C$
Thus, $a=-7, b=2, ab=(2)(-7)=-14=2C, C=-7$ or $a=2, b=3, ab=6=2C, C=3$
Therefore,
$C=-7$ or $C=3$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Prerequisites - P.4 - Factoring Polynomials - Exercises - Page 40: 87
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