f (x) = 9x^3 + 2x^2 - 5x + 4 and g(x) = 5x^3 - 7x + 4. What is f (x) - g(x)? Show all your stes and write your final answer in factored form.

I am really stumped on this, could someone help me?

3 answers

just subtract, term by term

4 x^3
2 x^2
2 x
0

4x^3 + 2 x^2 + 2 x

2 x (2 x^2 + x + 1)
Is that the answer? 2 x (2 x^2 + x + 1)? Or do I need to factor it, like it says?
So how do I write it in step by step form, for an essay?