General functional notation (e.g. g(x) ) is not supported. If you wish to draw a function such as g(x) = x^2, replace g(x) with y (or any other unused variable).

In your case you need to plug the value x = -12 into the eqaution:

So, in the solver you will have:

Click here to see the step by step solution.

That is:

g(-12) = 1