# Chapter 6 - Section 6.6 - Solving Quadratic Equations by Factoring - Exercise Set - Page 473: 38

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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