x=-8 or -1
Work Step by Step
Rewrite the equation in standard form. x$^2$+9x=-8 x$^2$+9x+8=0 Factor the trinomial. (x+8)(x+1)=0 Set each variable factor as equal to zero and then isolate the variable to find the solutions. x+8=0 or x+1=0 x=-8 or x=-1 Enter the original equation into your graphing utility to observe that the graph crosses the x-axis at -8 and -1.