#### Answer

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.