Hi

The section that I am currently busy with is the D operator, I am learning how to find the aux equation and complimentary functions

Its basic maths but unfortunately I am struggling with the higher DE

$\displaystyle \frac{d^{3}y}{dx^{3}} + \frac{d^{2}y}{dx^{2}} - 2y = 0$

I need to know what is the simplest way to solve these higher order DE

Please help