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: 38

Answer

x= -5 or 5

Work Step by Step

Factor the binomial using the formula for factoring a difference of squares. x$^2$-25=0 (x+5)(x-5)=0 Set each variable factor as equal to zero and then isolate the variable to find the solutions. x+5=0 or x-5=0 x=-5 or x=5 Enter the equation into your graphing utility to observe that the graph crosses the x-axis at -5 and 5.
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