College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 1 - Equations and Inequalities - Exercise Set 1.5 - Page 161: 104

Answer

The solutions are $x=-3$ and $x=\dfrac{1}{2}$

Work Step by Step

$2x^{2}+5x=3$ Take the $3$ to the left side of the equation: $2x^{2}+5x-3=0$ Solve this equation by factoring: $(x+3)(2x-1)=0$ Set both factors equal to $0$ and solve each individual equation for $x$: $x+3=0$ $x=-3$ $2x-1=0$ $2x=1$ $x=\dfrac{1}{2}$ The solutions are $x=-3$ and $x=\dfrac{1}{2}$
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