So 2 squared is going to be 4. And then we're going to have 2 times the product of both of these terms. So 2 times negative 2y squared times 2 is going to be negative 4y squared. And then negative y squared squared is plus y to the fourth. And then from that, we are going to subtract this thing squared. We are going to subtract this business square, which is going to be 4 minus 4 square roots of y plus the square root of y squared is just going to be y. And then all of that dy.