Area under curve question

Ok, so the equation is , , problem is to find area under the curve. That's fine, but this is actually the first one I'm doing where the area in question is /under/ the X-axis, since I'm in calc 2 now.

I ended up getting which simplified to which I evaluated from -1 to 1. The problem is that my answer came out to be which is a negative value, which obviously can't be for area. In this instance, did I forget a step somewhere or do you just change the sign of the answer? Thanks!