The negative 1 times negative 1 is equal to positive 1. This part right over here will simplify to x minus 2 square roots of x. This is minus 2 square roots of x. Minus 2 square roots of x, and then you have plus 1. Then all of that times dx. This is going to be equal to, let's put our pi out there, the antiderivative of this business. The antiderivative of x is x squared over 2.