## Introductory Algebra for College Students (7th Edition)

Factor out the GCF. x$^2$+4x=0 x(x+4)=0 Set each variable factor as equal to zero and isolate the variable to find the solutions. x=0 or x+4=0 x=0 or x=-4 Enter the original equation into your graphing utility to observe that the graph crosses the x-axis at 0 and -4.