The figure to the right shows four regions bounded by the graph of y=x sin x: R1, R2, R3, and R4, whose areas are 1, -1, +1, and 2-1, respectively. Use this information to evaluate the following integral. 2x x sin x dx Area = 1 R₁! 플 y = x sin x Area = 1 Area = +1 x 2π R3 R₁ Area 2 1 -2x x sin x dx = (Type an exact answer, using л as needed.)