College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 1 - Section 1.5 - Applications and Modeling with Quadratic Equations - 1.5 Exercises - Page 118: 5

Answer

$$x=-8,7$$

Work Step by Step

$$x(x+1)=56$$ $$x^2+x=56$$ $$x^2+x-56=0$$ $$(x+8)(x-7)=0$$ $$x=-8,7$$
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