Consider the area of the region bounded above by the graph of f(x) = x²,bounded below by the x-axis, and between the lines x = 4and x = 6. If a regular partition with 200 subintervals is used, what is the difference between the value of the left Riemann sum and the value of the right Riemann sum? Find this difference without actually calculating either of the Riemann sums.

R₂₀₀ L₂₀₀ =