No one has answered my past 5 questions so I would be really greatful if you could help out.

What is (f-g)(x)?
f(x)=x^4-4x^2+4
g(x)=x^3-2x^2+4x-8
What is the standard form of (f-g)(x)

This question is worth 20 points but i will give you 30 more in a separate question if you answer correctly