x=-9 or 2
Work Step by Step
Rewrite the equation in standard form. x$^2$+7x=18 x$^2$+7x-18+0 Factor the trinomial. (x+9)(x-2)=0 Set each variable factor as equal to zero and then isolate the variable to find the solutions. x+9=0 or x-2=0 x=-9 or x=2 Enter the original equation into your graphing utility to observe that the graph crosses the x-axis at -9 and 2.