But let's just say that for the sake of visualizing, we'll draw x right over here. And we will draw x squared right over here. So this whole expression, this entire definite integral, is essentially asking for, is essentially representing this entire area. The entire area under the curve. But what we could do is introduce a constant that's someplace in between x and x squared. Let's say that constant is c. And break this area into two different areas with c as the divider. So that same exact whole area, we can now write it as two separate integrals.