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

x=9 or -$\frac{4}{5}$
Set each variable factor as equal to zero and then isolate the variable to find the solutions. (x-9)(5x+4)=0 x-9=0 or 5x+4=0 x=9 or 5x=-4 x=9 or x=-$\frac{4}{5}$