Suppose that y=y(x) is a solution of the initial value problem

y' + e^x y = x^2, y(0) = 4

Find y'(0) , y''(0)

So how am I suppose to do the question? I started by doing the integrating factor method but ended up with e^(e^x). So am I on the right track? If not, can someone be kind enough to show me the right way. Many thanks xD