Tentukan hasil pengintegralan f(x) dx jika f(x) = (2x + 1)(3 - x)

(2x + 1)(3 - x) = -2x^2 + 5x + 3
hasil integral = -2/(2 + 1) x^(2 + 1) + 5/(1 + 1) x^(1+1) + 3 x^(0 + 1 ) + c
= -2/3 x^3 + 5/2 x^2 + 3x + c