Using the method of substitution, I = \\( 22(1 + 2x3)2da = f(u)du where u = du = dac f(u) = Using the above information: x2(1 + 2x3)2 dac = ( f(2) du (in terms of u) (in terms of a) Note: Don't forget the constant of integration in the last two blanks.Evaluate the indefinite integral: 2x - 3 dac = (2ac2 - 6x + 3)3 NOTE: Don't forget the constant of integration.9 Estimate I = (3x2 + 4x + 1) da using n = 3 subintervals, and 3 (a) Left endpoints. I~ (b) Right endpoints. I~