please answer questions 19 and 20

19. Determine the area of the region bounded by the curves. P(X ) - 4x + 2 9 ( x) = 5 x2+ 84x + 302 Be sure to enter an exact number 20. In order to find [ ( x - 4 ) ( x + 3 ) dx, we should use the substitution method. a . let u = so that bo du = c. the transformed integral is do finally after resubstituting for a in terms of X and adding + C, the answer is ( ( x - 4 ) ( x + 3) 10 dx =