Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 6 - Section 6.6 - Solving Quadratic Equations by Factoring - Exercise Set - Page 473: 9


x=-5 or -3

Work Step by Step

Factor the trinomial. x$^2$+8x+15=0 (x+5)(x+3)=0 Set each variable factor as equal to zero and then isolate the variable to find the solutions. x+5=0 or x+3=0 x=-5 or x=-3 Enter the original equation into your graphing utility to observe that the graph crosses the x-axis at -5 and -3.
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