Question

I need help integrating (x^2 -3x) e^(-3x) dx

Answer 1

So the integral of (x^2 -3x) e^(-3x) dx = (x^2 -3x)(-1/3e^(-3x)) - (2x-3)(1/9e^(-3x)) + 2(-1/27 e^(-3x)) +C

Answer 2

Could someone help me simplify this? and also if someone can confirm if this is correct.