Answer
$x = -4$
$x = \frac{1}{2}$
Work Step by Step
$2x^2 + 7x - 4 = 0$
$2x^2 + 8x - x - 4 = 0$
$2x(x+4) - (x + 4) = 0$
$(2x - 1) (x+4)$
$2x - 1 = 0$, $x + 4 = 0$
$2x = 1$, $x = -4$
$x = \frac{1}{2}$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 0 - Section 0.5 - Solving Polynomial Equations - Exercises - Page 30: 13
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