With the left section of wire, I'm going to obviously cut it in two. With the left section, I am going to construct an equilateral triangle. And with the right section, I am going to construct a square. I am going to construct a square. And my question for you and for me is, where do we make this cut in order to minimize the combined areas of this triangle and this square? Well, let's figure out, let's define a variable that we're trying to minimize or that we're trying to optimize with respect to. So let's say that the variable x is the number of meters that we decide to cut from the left.