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Use Green's Theorem to find the work done by the variable force F(x, y) = 5xi + 2y2j in moving an object along the curve

x = x (t) = t, y = y(t) = t² ,0 ≤ t ≤ 3, and then returning to the point (0,0) along the line x (t) = 1, y(t): 31.