Answer Happy

Q14
PLEASE answer all parts of the question. PLEASE SHOW and clearlyEXPLAIN all parts of the question and HIGHLIGHT the final solution.If the answer is correct I will upvote!
Find the first four nonzero terms in a power series expansion about x = 0 for the solution to the given initial value problem. y" + (x-7)y'-y=0; y(0) = -3, y'(0) = 0 +. y(x) = (Type an expression that includes all terms up to order 4.) ...