this equations directions was to use the zero product property to solve and check your answer.
you need to multiply what's inside the parenthesis(x+3) with that is beside the parenthesis, x.
so X x X and X x 3 = x^2 and 3x
sk the problem turns out to be x^2 + 3x +18
does it want you to solve for x or does it want an answer like this?