Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 10 - Quadratic Equations - 10.3 - Quadratic Formula - Problem Set 10.3 - Page 453: 50


The answer is below.

Work Step by Step

The friend is wrong, for as long as all terms are on one side of the equal sign and are set equal to zero, the quadratic formula can be applied. A way to convince the friend that he is wrong is to plug both the initial and the second equation into the quadratic formula. By doing this, the friend will realize that both methods yield the same result.
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