Now I think that could be interesting just to visualize what's going on here. So let's say that's our y-axis. And this right over here is our x-axis. Now when does an absolute value function like this, when is this going to hit a minimum point? Well, the absolute value of something is always going to be non-negative. So it hits a minimum point when this thing is equal to 0. Well, when is this thing equal to 0?