I am trying to find the laplace transform of this equation: $$4-4t+2t^2$$
What I am doing:
$$\frac{4}{s}-\frac{4}{s^2}+\frac{4}{s^3}$$ $$\frac{4s^2-4s}{s^3}+\frac{4}{s^3}$$ $$\frac{4s^2-4s+4}{s3}$$
But I am getting the wrong answer, can you please tell me what I am doing wrong?