Barrons AP Calculus

(D)     using   long    division,   

(B) Using   parts   we  let u   =   x^2 ,   dv  =   exdx;   then    du  =   2x  dx, v   =   ex, and

We  use parts   again   with    u   =   x,  dv  =   e xdx;  then    du  =   dx, v   =   e x,    and