A single conservative force F(x) acts on a small sphere of mass m while the sphere moves along the x-axis. You release the sphere from rest at x = -1.50 m. As the sphere moves, you measure its velocity as a function of time and obtain the following data: v(t) = 2t² + 3t + 5. What is the net work done on the sphere as it moves from x = -1.50 m to x = 2.50 m?