a) Find the solutnion of the following differential equation:

(d^2y)/(dx^2)+2dy/dx-8y=0

b) Find the solutnion of the following differential equation:

(d^2y)/(dx^2)+2dy/dx-8y=14e^3x

With initial conditions: at x=0, y(0)=3 and (dy/dx)(0)=-4

My last problem, i tried to solve but every time i was getting other solutions. Can somebody tell me (especially) explain how to solve this ?